#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<malloc.h>
struct addr{
char name[40];
char street[40];
char district[40];
char town[40];
char county[40];
char country[40];
char postcode[40];
char telno[40];
char email[40];
struct addr *next;
};
typedef struct addr address;
address *temp, *start, *pointer, *i= NULL;
void list(), add(void), deletion(void), search(void);
void save(), load(void), txtoutput(void), sort(void);
void readLine(char buffer[]);
int main(void)
{
int choice;
for(;;){
printf("\n");
printf("1. Insert a record\n");
printf("2. List the file\n");
printf("3. Delete a record\n");
printf("4. Save the file\n");
printf("5. Save to a text file for output to a wp\n");
printf("6. Search for a record\n");
printf("7. Load the file\n");
printf("8. Quit\n");
do{
printf("\nEnter your choice: ");
scanf("%i",&choice);
getchar();
if(choice==1) add();
if(choice==2) list();
if(choice==3) deletion();
if(choice==4) save();
if(choice==5) txtoutput();
if(choice==6) search();
if(choice==7) load();
if(choice== 8) exit(0);
}while(choice < 1 && choice >8);
}
return 0;
}
void add()
{
address *q;
pointer = (address*) malloc(sizeof(address));
q = (address*) malloc(sizeof(address));
printf("Enter information on new customer\n");
printf("Enter name: ");
readLine(pointer->name);
printf("Enter street: ");
readLine(pointer->street);
printf("Enter district / parish: ");
readLine(pointer->district);
printf("Enter town / city: ");
readLine(pointer->town);
printf("Enter county: ");
readLine(pointer->county);
printf("Enter country: ");
readLine(pointer->country);
printf("Enter postcode: ");
readLine(pointer->postcode);
printf("Enter telephone number: ");
readLine(pointer->telno);
printf("Enter email address: ");
readLine(pointer->email);
if (start == NULL || strcmp(pointer->name, start->name)<0)
{
pointer->next=start;
start=pointer;
}
else
{
q = start;
while(q->next!=NULL && strcmp(q->next->name , pointer->name) < 0)
q=q->next;
pointer->next=q->next;
q->next=pointer;
}
}
void list()
{
if(start==NULL)
printf("No records to view");
/*for (temp=start;temp!=NULL;temp=temp->next)*/
temp = start;
while(temp!=NULL)
{
printf("\n");
printf("%s\n",temp->name);
printf("%s\n",temp->street);
printf("%s\n",temp->district);
printf("%s\n",temp->town);
printf("%s\n",temp->county);
printf("%s\n",temp->country);
printf("%s\n",temp->postcode);
printf("%s\n",temp->telno);
printf("%s\n",temp->email);
printf("\n");
temp=temp->next;
}
}
void readLine(char buffer[])
{
char character;
int i=0;
do
{
character=getchar();
buffer[i]=character;
++i;
}
while(character !='\n');
buffer[i-1]='\0';
}
void save()
{
FILE *fp;
if((fp=fopen("maillist", "wb"))==NULL) {
printf("Cannot open file.\n");
return;
}
temp=start;
while(temp){
fwrite(temp,
sizeof(struct addr), 1, fp);
temp = temp->next;
}
fclose(fp);
}
void load()
{
FILE *fp;
if((fp=fopen("maillist", "rb"))==NULL) {
printf("Cannot open file,\n");
return;
}
start = ( address*) malloc(sizeof(address));
/*while(start){
temp=start->next;
free(temp);
start=temp;
}*/
free(start);
start=NULL;
while(!feof(fp)){
i = ( address*) malloc(sizeof(address));
temp = ( address*) malloc(sizeof(address));
if(!i){
printf("Out of memory.\n");
return;
}
if(1!=fread(i,sizeof(struct addr),1,fp))break;
if(start!=NULL)
{
temp = start;
while(temp->next!=NULL)
temp=temp->next;
i->next=NULL;
temp->next=i;
}
else
{
start=i;
i->next=NULL;
}
}
fclose(fp);
}
void txtoutput(void)
{
int t;
int count;
FILE *stream;
char filename[30];
count = 0;
printf("Enter a file name.\n");
scanf("%s",filename);
printf("\n");
stream = fopen(filename, "w+");
temp = start;
while(temp) {
count = count +1;
fprintf(stream,"%i\n",count);
fprintf(stream,"%s\n", temp->name);
fprintf(stream,"%s\n", temp->street);
fprintf(stream,"%s\n", temp->district);
fprintf(stream,"%s\n", temp->town);
fprintf(stream,"%s\n", temp->county);
fprintf(stream,"%s\n", temp->country);
fprintf(stream,"%s\n", temp->postcode);
fprintf(stream,"%s\n", temp->telno);
fprintf(stream,"%s\n", temp->email);
fprintf(stream,"\n");
temp=temp->next;
}
fclose(stream);
return;
}
void search()
{
int flag=0;
char name[40];
printf("Enter name of person to search for\n");
readLine(name);
temp=start;
while(temp)
{
if(strcmp(name, temp->name)==0)
{
printf("%s\n",temp->name);
printf("%s\n",temp->street);
printf("%s\n",temp->district);
printf("%s\n",temp->town);
printf("%s\n",temp->county);
printf("%s\n",temp->country);
printf("%s\n",temp->postcode);
printf("%s\n",temp->telno);
printf("%s\n",temp->email);
flag= 1;
}
temp=temp->next;
}
if(flag==0)
printf("Not found in list\n");
}
void deletion()
{
address *t, *pt;
t = ( address*) malloc(sizeof(address));
pt = ( address*) malloc(sizeof(address));
char name[40];
if(start == NULL)
{
printf("List is empty\n");
return;
}
printf("Enter name of person to be deleted\n");
readLine(name);
if(strcmp(name,start->name)==0)
{
temp=start;
start = start->next;
free(temp);
printf("Record is deleted\n");
return;
}
pt=start;
t=start->next;
while(t!=NULL&& strcmp(t->name,name)!=0)
{
pt =t;
t=t->next;
}
if(t==NULL)
{
printf("Record does not exist\n");
return;
}
if(strcmp(t->name,name)==0)
{
pt->next=t->next;
printf("Record is deleted\n");
free(t);
return;
}
}
Tuesday, 28 October 2014
Wednesday, 25 June 2014
A database in C using a single linked list.
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<malloc.h>
#define MAX 10000
struct addr{
char name[40];
char street[40];
char district[40];
char town[40];
char county[40];
char country[40];
char postcode[40];
char telno[40];
char email[40];
struct addr *next;
};
typedef struct addr address;
address *temp, *start, *pointer, *i= NULL;
void list(), createlist(void), add(void), addafter(void), deletion(void), search(void);
void save(), load(void), txtoutput(void);
void store();
void readLine(char buffer[]);
int main(void)
{
int choice;
for(;;){
printf("\n");
printf("1. Create a list\n");
printf("2. Add a record to the beginning of the list\n");
printf("3. Add a record to the end of the list\n");
printf("4. List the file\n");
printf("5. Delete a record\n");
printf("6. Save the file\n");
printf("7. Save to a text file for output to a wp\n");
printf("8. Search for a record\n");
printf("9. Load the file\n");
printf("10. Quit\n");
do{
printf("\nEnter your choice: ");
scanf("%i",&choice);
getchar();
if(choice== 1) createlist();
if(choice==2) add();
if(choice==3) addafter();
if(choice==4) list();
if(choice==5) deletion();
if(choice==6) save();
if(choice==7) txtoutput();
if(choice==8) search();
if(choice==9) load();
if(choice== 10) exit(0);
}while(choice < 1 && choice >10);
}
return 0;
}
void add()
{
pointer = (address*) malloc(sizeof(address));
printf("Enter information on new customer\n");
printf("Enter name: ");
readLine(pointer->name);
printf("Enter street: ");
readLine(pointer->street);
printf("Enter district / parish: ");
readLine(pointer->district);
printf("Enter town / city: ");
readLine(pointer->town);
printf("Enter county: ");
readLine(pointer->county);
printf("Enter country: ");
readLine(pointer->country);
printf("Enter postcode: ");
readLine(pointer->postcode);
printf("Enter telephone number: ");
readLine(pointer->telno);
printf("Enter email pointer: ");
readLine(pointer->email);
pointer->next=start;
start=pointer;
}
void addafter()
{
pointer = (address*) malloc(sizeof(address));
printf("Enter information on new customer\n");
printf("Enter name: ");
readLine(pointer->name);
printf("Enter street: ");
readLine(pointer->street);
printf("Enter district / parish: ");
readLine(pointer->district);
printf("Enter town / city: ");
readLine(pointer->town);
printf("Enter county: ");
readLine(pointer->county);
printf("Enter country: ");
readLine(pointer->country);
printf("Enter postcode: ");
readLine(pointer->postcode);
printf("Enter telephone number: ");
readLine(pointer->telno);
printf("Enter email pointer: ");
readLine(pointer->email);
temp=start;
while(temp->next !=NULL)
temp=temp->next;
temp->next=pointer;
}
void list()
{
if(start==NULL)
printf("No records to view");
/*for (temp=start;temp!=NULL;temp=temp->next)*/
temp = start;
while(temp!=NULL)
{
printf("%s\n",temp->name);
printf("%s\n",temp->street);
printf("%s\n",temp->district);
printf("%s\n",temp->town);
printf("%s\n",temp->county);
printf("%s\n",temp->country);
printf("%s\n",temp->postcode);
printf("%s\n",temp->telno);
printf("%s\n",temp->email);
temp=temp->next;
}
}
void readLine(char buffer[])
{
char character;
int i=0;
do
{
character=getchar();
buffer[i]=character;
++i;
}
while(character !='\n');
buffer[i-1]='\0';
}
void createlist()
{
pointer = (address*) malloc(sizeof(address));
printf("Enter information on new customer\n");
printf("Enter name: ");
readLine(pointer->name);
printf("Enter street: ");
readLine(pointer->street);
printf("Enter district / parish: ");
readLine(pointer->district);
printf("Enter town / city: ");
readLine(pointer->town);
printf("Enter county: ");
readLine(pointer->county);
printf("Enter country: ");
readLine(pointer->country);
printf("Enter postcode: ");
readLine(pointer->postcode);
printf("Enter telephone number: ");
readLine(pointer->telno);
printf("Enter email pointer: ");
readLine(pointer->email);
pointer->next=NULL;
if(start==NULL)/*if list is empty*/
start=pointer;
else
{
/*add element to end of list*/
temp=start;
while(temp->next !=NULL)
temp=temp->next;
temp->next =pointer;
}
}
void save()
{
FILE *fp;
if((fp=fopen("maillist", "wb"))==NULL) {
printf("Cannot open file.\n");
return;
}
temp=start;
while(temp){
fwrite(temp,
sizeof(struct addr), 1, fp);
temp = temp->next;
}
fclose(fp);
}
void load()
{
FILE *fp;
if((fp=fopen("maillist", "rb"))==NULL) {
printf("Cannot open file,\n");
return;
}
start = ( address*) malloc(sizeof(address));
/*while(start){
temp=start->next;
free(temp);
start=temp;
}*/
free(start);
start=NULL;
while(!feof(fp)){
i = ( address*) malloc(sizeof(address));
temp = ( address*) malloc(sizeof(address));
if(!i){
printf("Out of memory.\n");
return;
}
if(1!=fread(i,sizeof(struct addr),1,fp))break;
if(start!=NULL)
{
temp = start;
while(temp->next!=NULL)
temp=temp->next;
i->next=NULL;
temp->next=i;
}
else
{
start=i;
i->next=NULL;
}
}
fclose(fp);
}
void txtoutput(void)
{
int t;
int count;
FILE *stream;
char filename[30];
count = 0;
printf("Enter a file name.\n");
scanf("%s",filename);
printf("\n");
stream = fopen(filename, "w+");
temp = start;
while(temp) {
count = count +1;
fprintf(stream,"%i\n",count);
fprintf(stream,"%s\n", temp->name);
fprintf(stream,"%s\n", temp->street);
fprintf(stream,"%s\n", temp->district);
fprintf(stream,"%s\n", temp->town);
fprintf(stream,"%s\n", temp->county);
fprintf(stream,"%s\n", temp->country);
fprintf(stream,"%s\n", temp->postcode);
fprintf(stream,"%s\n", temp->telno);
fprintf(stream,"%s\n", temp->email);
fprintf(stream,"\n");
temp=temp->next;
}
fclose(stream);
return;
}
void search()
{
int flag=0;
char name[40];
printf("Enter name of person to search for\n");
readLine(name);
temp=start;
while(temp)
{
if(strcmp(name, temp->name)==0)
{
printf("%s\n",temp->name);
printf("%s\n",temp->street);
printf("%s\n",temp->district);
printf("%s\n",temp->town);
printf("%s\n",temp->county);
printf("%s\n",temp->country);
printf("%s\n",temp->postcode);
printf("%s\n",temp->telno);
printf("%s\n",temp->email);
flag= 1;
}
temp=temp->next;
}
if(flag==0)
printf("Not found in list\n");
}
void deletion()
{
address *t, *pt;
t = ( address*) malloc(sizeof(address));
pt = ( address*) malloc(sizeof(address));
char name[40];
if(start == NULL)
{
printf("List is empty\n");
return;
}
printf("Enter name of person to be deleted\n");
readLine(name);
if(strcmp(name,start->name)==0)
{
temp=start;
start = start->next;
free(temp);
return;
}
pt=start;
t=start->next;
while(t!=NULL&& strcmp(t->name,name)!=0)
{
pt =t;
t=t->next;
}
if(t==NULL)
{
printf("Record does not exist\n");
return;
}
if(strcmp(t->name,name)==0)
{
pt->next=t->next;
printf("Record is deleted\n");
free(t);
return;
}
}
#include<stdlib.h>
#include<string.h>
#include<malloc.h>
#define MAX 10000
struct addr{
char name[40];
char street[40];
char district[40];
char town[40];
char county[40];
char country[40];
char postcode[40];
char telno[40];
char email[40];
struct addr *next;
};
typedef struct addr address;
address *temp, *start, *pointer, *i= NULL;
void list(), createlist(void), add(void), addafter(void), deletion(void), search(void);
void save(), load(void), txtoutput(void);
void store();
void readLine(char buffer[]);
int main(void)
{
int choice;
for(;;){
printf("\n");
printf("1. Create a list\n");
printf("2. Add a record to the beginning of the list\n");
printf("3. Add a record to the end of the list\n");
printf("4. List the file\n");
printf("5. Delete a record\n");
printf("6. Save the file\n");
printf("7. Save to a text file for output to a wp\n");
printf("8. Search for a record\n");
printf("9. Load the file\n");
printf("10. Quit\n");
do{
printf("\nEnter your choice: ");
scanf("%i",&choice);
getchar();
if(choice== 1) createlist();
if(choice==2) add();
if(choice==3) addafter();
if(choice==4) list();
if(choice==5) deletion();
if(choice==6) save();
if(choice==7) txtoutput();
if(choice==8) search();
if(choice==9) load();
if(choice== 10) exit(0);
}while(choice < 1 && choice >10);
}
return 0;
}
void add()
{
pointer = (address*) malloc(sizeof(address));
printf("Enter information on new customer\n");
printf("Enter name: ");
readLine(pointer->name);
printf("Enter street: ");
readLine(pointer->street);
printf("Enter district / parish: ");
readLine(pointer->district);
printf("Enter town / city: ");
readLine(pointer->town);
printf("Enter county: ");
readLine(pointer->county);
printf("Enter country: ");
readLine(pointer->country);
printf("Enter postcode: ");
readLine(pointer->postcode);
printf("Enter telephone number: ");
readLine(pointer->telno);
printf("Enter email pointer: ");
readLine(pointer->email);
pointer->next=start;
start=pointer;
}
void addafter()
{
pointer = (address*) malloc(sizeof(address));
printf("Enter information on new customer\n");
printf("Enter name: ");
readLine(pointer->name);
printf("Enter street: ");
readLine(pointer->street);
printf("Enter district / parish: ");
readLine(pointer->district);
printf("Enter town / city: ");
readLine(pointer->town);
printf("Enter county: ");
readLine(pointer->county);
printf("Enter country: ");
readLine(pointer->country);
printf("Enter postcode: ");
readLine(pointer->postcode);
printf("Enter telephone number: ");
readLine(pointer->telno);
printf("Enter email pointer: ");
readLine(pointer->email);
temp=start;
while(temp->next !=NULL)
temp=temp->next;
temp->next=pointer;
}
void list()
{
if(start==NULL)
printf("No records to view");
/*for (temp=start;temp!=NULL;temp=temp->next)*/
temp = start;
while(temp!=NULL)
{
printf("%s\n",temp->name);
printf("%s\n",temp->street);
printf("%s\n",temp->district);
printf("%s\n",temp->town);
printf("%s\n",temp->county);
printf("%s\n",temp->country);
printf("%s\n",temp->postcode);
printf("%s\n",temp->telno);
printf("%s\n",temp->email);
temp=temp->next;
}
}
void readLine(char buffer[])
{
char character;
int i=0;
do
{
character=getchar();
buffer[i]=character;
++i;
}
while(character !='\n');
buffer[i-1]='\0';
}
void createlist()
{
pointer = (address*) malloc(sizeof(address));
printf("Enter information on new customer\n");
printf("Enter name: ");
readLine(pointer->name);
printf("Enter street: ");
readLine(pointer->street);
printf("Enter district / parish: ");
readLine(pointer->district);
printf("Enter town / city: ");
readLine(pointer->town);
printf("Enter county: ");
readLine(pointer->county);
printf("Enter country: ");
readLine(pointer->country);
printf("Enter postcode: ");
readLine(pointer->postcode);
printf("Enter telephone number: ");
readLine(pointer->telno);
printf("Enter email pointer: ");
readLine(pointer->email);
pointer->next=NULL;
if(start==NULL)/*if list is empty*/
start=pointer;
else
{
/*add element to end of list*/
temp=start;
while(temp->next !=NULL)
temp=temp->next;
temp->next =pointer;
}
}
void save()
{
FILE *fp;
if((fp=fopen("maillist", "wb"))==NULL) {
printf("Cannot open file.\n");
return;
}
temp=start;
while(temp){
fwrite(temp,
sizeof(struct addr), 1, fp);
temp = temp->next;
}
fclose(fp);
}
void load()
{
FILE *fp;
if((fp=fopen("maillist", "rb"))==NULL) {
printf("Cannot open file,\n");
return;
}
start = ( address*) malloc(sizeof(address));
/*while(start){
temp=start->next;
free(temp);
start=temp;
}*/
free(start);
start=NULL;
while(!feof(fp)){
i = ( address*) malloc(sizeof(address));
temp = ( address*) malloc(sizeof(address));
if(!i){
printf("Out of memory.\n");
return;
}
if(1!=fread(i,sizeof(struct addr),1,fp))break;
if(start!=NULL)
{
temp = start;
while(temp->next!=NULL)
temp=temp->next;
i->next=NULL;
temp->next=i;
}
else
{
start=i;
i->next=NULL;
}
}
fclose(fp);
}
void txtoutput(void)
{
int t;
int count;
FILE *stream;
char filename[30];
count = 0;
printf("Enter a file name.\n");
scanf("%s",filename);
printf("\n");
stream = fopen(filename, "w+");
temp = start;
while(temp) {
count = count +1;
fprintf(stream,"%i\n",count);
fprintf(stream,"%s\n", temp->name);
fprintf(stream,"%s\n", temp->street);
fprintf(stream,"%s\n", temp->district);
fprintf(stream,"%s\n", temp->town);
fprintf(stream,"%s\n", temp->county);
fprintf(stream,"%s\n", temp->country);
fprintf(stream,"%s\n", temp->postcode);
fprintf(stream,"%s\n", temp->telno);
fprintf(stream,"%s\n", temp->email);
fprintf(stream,"\n");
temp=temp->next;
}
fclose(stream);
return;
}
void search()
{
int flag=0;
char name[40];
printf("Enter name of person to search for\n");
readLine(name);
temp=start;
while(temp)
{
if(strcmp(name, temp->name)==0)
{
printf("%s\n",temp->name);
printf("%s\n",temp->street);
printf("%s\n",temp->district);
printf("%s\n",temp->town);
printf("%s\n",temp->county);
printf("%s\n",temp->country);
printf("%s\n",temp->postcode);
printf("%s\n",temp->telno);
printf("%s\n",temp->email);
flag= 1;
}
temp=temp->next;
}
if(flag==0)
printf("Not found in list\n");
}
void deletion()
{
address *t, *pt;
t = ( address*) malloc(sizeof(address));
pt = ( address*) malloc(sizeof(address));
char name[40];
if(start == NULL)
{
printf("List is empty\n");
return;
}
printf("Enter name of person to be deleted\n");
readLine(name);
if(strcmp(name,start->name)==0)
{
temp=start;
start = start->next;
free(temp);
return;
}
pt=start;
t=start->next;
while(t!=NULL&& strcmp(t->name,name)!=0)
{
pt =t;
t=t->next;
}
if(t==NULL)
{
printf("Record does not exist\n");
return;
}
if(strcmp(t->name,name)==0)
{
pt->next=t->next;
printf("Record is deleted\n");
free(t);
return;
}
}
Wednesday, 30 October 2013
A C database that implements a quick sort and a binary chop.
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#define MAX 10000
struct addr {
char name[40];
char street[40];
char district[40];
char town[40];
char county[40];
char country[40];
char postcode[40];
char telno[40];
char email[40];
}addr_list[MAX];
struct addr temp;
struct addr comp;
int counter;
int lend=1;
void init_list(void), enter(void);
void delete(void), list(void);
void load(void), save(void), sort(int left, int right);
void txtoutput(void);
void search(void);
void readLine(char buffer[]);
void swap(int i, int j);
int main(void)
{
int choice;
char s[3];
counter = 0;
init_list();
for(;;){
printf("\n");
printf("1. Create a record\n");
printf("2. Delete a record\n");
printf("3. List the file\n");
printf("4. Save the file\n");
printf("5. Load the file\n");
printf("6. Sort the file\n");
printf("7. Search\n");
printf("8. Output to a text file for printing or import into wp\n");
printf("9. Quit\n");
do{
printf("\nEnter your choice: ");
readLine(s);
choice=atoi(s);
if(choice== 1) enter();
if(choice==2) delete();
if(choice==3) list();
if(choice==4) save();
if(choice==5) load();
if(choice==6) sort(1, counter);
if(choice==7) search();
if(choice== 8) txtoutput();
if(choice== 9) exit(0);
}while(choice < 1 && choice >9);
}
return 0;
}
void init_list(void)
{
register int t;
for(t=0; t<MAX; ++t) addr_list[t].name[0] ='\0';
}
void enter(void)
{
char s[40];
int i;
for(i=1; i<MAX; i++)
if(!*addr_list[i].name)
break;
if(i==MAX)
{
printf("Subscriber array full\n");
return;
}
printf("Enter information on new customer\n");
printf("Enter name: ");
readLine(addr_list[i].name);
printf("Enter street: ");
readLine(addr_list[i].street);
printf("Enter district / parish: ");
readLine(addr_list[i].district);
printf("Enter town / city: ");
readLine(addr_list[i].town);
printf("Enter county: ");
readLine(addr_list[i].county);
printf("Enter country: ");
readLine(addr_list[i].country);
printf("Enter postcode: ");
readLine(addr_list[i].postcode);
printf("Enter telephone number: ");
readLine(addr_list[i].telno);
printf("Enter email address: ");
readLine(addr_list[i].email);
counter=counter+1;
}
void delete(void)
{
int t;
int u;
printf("enter a record number #: ");
scanf("%i", &t);
getchar();
for(u=t; u<=counter; u++){
addr_list[u] = addr_list[u+1];
}
addr_list[counter].name[0] = '\0';
addr_list[counter].street[0] = '\0';
addr_list[counter].district[0] = '\0';
addr_list[counter].town[0] = '\0';
addr_list[counter].county[0] = '\0';
addr_list[counter].country[0] = '\0';
addr_list[counter].postcode[0] = '\0';
addr_list[counter].telno[0] = '\0';
addr_list[counter].email[0] = '\0';
counter = counter -1;
}
void list(void)
{
register int t;
int count;
count=0;
for(t=1; t<=counter; t++) {
count = count +1;
printf("Record number: %i\n",count);
printf("%s\n", addr_list[t].name);
printf("%s\n", addr_list[t].street);
printf("%s\n", addr_list[t].district);
printf("%s\n", addr_list[t].town);
printf("%s\n", addr_list[t].county);
printf("%s\n", addr_list[t].country);
printf("%s\n", addr_list[t].postcode);
printf("%s\n", addr_list[t].telno);
printf("%s\n", addr_list[t].email);
printf("\n");
}
}
void sort(int left, int right)
{
int i, last;
i=left;
if(left>=right) /*do nothing if array contains less than*/
return; /*two elements*/
swap(left, (left+right)/2); /*move partition element to*/
last = left; /*addr_list[0]*/
for(i=left; i<=right; i++) /*partition*/
if(strcmp(addr_list[i].name,addr_list[left].name)<0)
swap(++last, i);
swap(left, last); /*restore partition element*/
sort(left, last - 1);
sort(last+1, right);
}
void swap(int i, int j)
{
temp = addr_list[i];
addr_list[i]=addr_list[j];
addr_list[j]=temp;
i++; j--;
}
void save(void)
{
FILE *fp;
register int i;
if((fp=fopen("maillist", "wb"))==NULL) {
printf("Cannot open file.\n");
return;
}
for(i=1; i<MAX; i++)
if(*addr_list[i].name)
if(fwrite(&addr_list[i],
sizeof(struct addr), 1, fp)!=1)
printf("File write error.\n");
fclose(fp);
}
void loadbackup(void)
{
FILE *fp;
register int i;
char filename[30];
printf("Enter a file name.\n");
scanf("%s",filename);
printf("\n");
if((fp=fopen(filename, "rb"))==NULL) {
printf("Cannot open file,\n");
return;
}
init_list();
for(i=1; i<MAX; i++){
if(fread(&addr_list[i],
sizeof(struct addr), 1, fp)!=1) {
if(feof(fp)) break;
printf("File read error.\n");
}
counter=counter+1;
}
fclose(fp);
}
void load(void)
{
FILE *fp;
register int i;
if((fp=fopen("maillist", "rb"))==NULL) {
printf("Cannot open file,\n");
return;
}
init_list();
for(i=1; i<MAX; i++){
if(fread(&addr_list[i],
sizeof(struct addr), 1, fp)!=1) {
if(feof(fp)) break;
printf("File read error.\n");
}
counter=counter +1;
}
fclose(fp);
}
void txtoutput(void)
{
int t;
int count;
FILE *stream;
char filename[30];
count = 0;
printf("Enter a file name.\n");
scanf("%s",filename);
printf("\n");
stream = fopen(filename, "w+");
for(t=1; t<MAX; t++) {
if(addr_list[t].name[0]) {
count = count +1;
fprintf(stream,"%i\n",count);
fprintf(stream,"%s\n", addr_list[t].name);
fprintf(stream,"%s\n", addr_list[t].street);
fprintf(stream,"%s\n", addr_list[t].district);
fprintf(stream,"%s\n", addr_list[t].town);
fprintf(stream,"%s\n", addr_list[t].county);
fprintf(stream,"%s\n", addr_list[t].country);
fprintf(stream,"%s\n", addr_list[t].postcode);
fprintf(stream,"%s\n", addr_list[t].telno);
fprintf(stream,"%s\n", addr_list[t].email);
fprintf(stream,"\n");
}
}
fclose(stream);
return;
}
void outputtwo(void)
{
FILE *fp;
register int i;
char filename[30];
printf("Enter a file name.\n");
scanf("%s",filename);
printf("\n");
if((fp=fopen(filename, "wb"))==NULL) {
printf("Cannot open file.\n");
return;
}
for(i=1; i<MAX; i++)
if(*addr_list[i].name)
if(fwrite(&addr_list[i],
sizeof(struct addr), 1, fp)!=1)
printf("File write error.\n");
fclose(fp);
}
void search(void)
{
int low, mid, top, found,count,countdown;
char s[40];
printf("\nEnter a name.\n");
readLine(s);
low = 1;
top = counter;
do
{
found = 0;
mid = (low + top)/2;
if (strcmp(s, addr_list[mid].name)==0)
{
printf("\nRecord number: %i\n", mid);
printf("\nName: %s\n",addr_list[mid].name);
printf("\nStreet: %s\n",addr_list[mid].street);
printf("\nDistrict: %s\n",addr_list[mid].district);
printf("\nTown: %s\n",addr_list[mid].town);
printf("\nCounty: %s\n",addr_list[mid].county);
printf("\nCountry: %s\n",addr_list[mid].country);
printf("\nPostcode:%s\n",addr_list[mid].postcode);
printf("\nTelephone number: %s\n",addr_list[mid].telno);
printf("\nEmail address: %s\n",addr_list[mid].email);
printf("\n");
/*break;*/
count = mid;
countdown = mid;
do
{
countdown=countdown-1;
if(strcmp(s, addr_list[countdown].name)==0)
{
printf("\nRecord number: %i\n", countdown);
printf("\nName: %s\n",addr_list[countdown].name);
printf("\nStreet: %s\n",addr_list[countdown].street);
printf("\nDistrict: %s\n",addr_list[countdown].district);
printf("\nTown: %s\n",addr_list[countdown].town);
printf("\nCounty: %s\n",addr_list[countdown].county);
printf("\nCountry: %s\n",addr_list[countdown].country);
printf("\nPostcode:%s\n",addr_list[countdown].postcode);
printf("\nTelephone number: %s\n",addr_list[countdown].telno);
printf("\nEmail address: %s\n",addr_list[countdown].email);
printf("\n");
}
}while(strcmp(s,addr_list[countdown].name)==0);
do{
count=count +1;
if(strcmp(s, addr_list[count].name)==0)
{
printf("\nRecord number: %i\n", count);
printf("\nName: %s\n",addr_list[count].name);
printf("\nStreet: %s\n",addr_list[count].street);
printf("\nDistrict: %s\n",addr_list[count].district);
printf("\nTown: %s\n",addr_list[count].town);
printf("\nCounty: %s\n",addr_list[count].county);
printf("\nCountry: %s\n",addr_list[count].country);
printf("\nPostcode:%s\n",addr_list[count].postcode);
printf("\nTelephone number: %s\n",addr_list[count].telno);
printf("\nEmail address: %s\n",addr_list[count].email);
printf("\n");
}
}while(strcmp(s,addr_list[count].name)==0);
return;
}
else
if(strcmp(s, addr_list[mid].name)<0)
top = mid -1;
else
if(strcmp(s, addr_list[mid].name)>0)
low = mid + 1;
}while(low<=top);
}
void readLine(char buffer[])
{
char character;
int i=0;
do
{
character=getchar();
buffer[i]=character;
++i;
}
while(character !='\n');
buffer[i-1]='\0';
}
#include<stdlib.h>
#include<string.h>
#define MAX 10000
struct addr {
char name[40];
char street[40];
char district[40];
char town[40];
char county[40];
char country[40];
char postcode[40];
char telno[40];
char email[40];
}addr_list[MAX];
struct addr temp;
struct addr comp;
int counter;
int lend=1;
void init_list(void), enter(void);
void delete(void), list(void);
void load(void), save(void), sort(int left, int right);
void txtoutput(void);
void search(void);
void readLine(char buffer[]);
void swap(int i, int j);
int main(void)
{
int choice;
char s[3];
counter = 0;
init_list();
for(;;){
printf("\n");
printf("1. Create a record\n");
printf("2. Delete a record\n");
printf("3. List the file\n");
printf("4. Save the file\n");
printf("5. Load the file\n");
printf("6. Sort the file\n");
printf("7. Search\n");
printf("8. Output to a text file for printing or import into wp\n");
printf("9. Quit\n");
do{
printf("\nEnter your choice: ");
readLine(s);
choice=atoi(s);
if(choice== 1) enter();
if(choice==2) delete();
if(choice==3) list();
if(choice==4) save();
if(choice==5) load();
if(choice==6) sort(1, counter);
if(choice==7) search();
if(choice== 8) txtoutput();
if(choice== 9) exit(0);
}while(choice < 1 && choice >9);
}
return 0;
}
void init_list(void)
{
register int t;
for(t=0; t<MAX; ++t) addr_list[t].name[0] ='\0';
}
void enter(void)
{
char s[40];
int i;
for(i=1; i<MAX; i++)
if(!*addr_list[i].name)
break;
if(i==MAX)
{
printf("Subscriber array full\n");
return;
}
printf("Enter information on new customer\n");
printf("Enter name: ");
readLine(addr_list[i].name);
printf("Enter street: ");
readLine(addr_list[i].street);
printf("Enter district / parish: ");
readLine(addr_list[i].district);
printf("Enter town / city: ");
readLine(addr_list[i].town);
printf("Enter county: ");
readLine(addr_list[i].county);
printf("Enter country: ");
readLine(addr_list[i].country);
printf("Enter postcode: ");
readLine(addr_list[i].postcode);
printf("Enter telephone number: ");
readLine(addr_list[i].telno);
printf("Enter email address: ");
readLine(addr_list[i].email);
counter=counter+1;
}
void delete(void)
{
int t;
int u;
printf("enter a record number #: ");
scanf("%i", &t);
getchar();
for(u=t; u<=counter; u++){
addr_list[u] = addr_list[u+1];
}
addr_list[counter].name[0] = '\0';
addr_list[counter].street[0] = '\0';
addr_list[counter].district[0] = '\0';
addr_list[counter].town[0] = '\0';
addr_list[counter].county[0] = '\0';
addr_list[counter].country[0] = '\0';
addr_list[counter].postcode[0] = '\0';
addr_list[counter].telno[0] = '\0';
addr_list[counter].email[0] = '\0';
counter = counter -1;
}
void list(void)
{
register int t;
int count;
count=0;
for(t=1; t<=counter; t++) {
count = count +1;
printf("Record number: %i\n",count);
printf("%s\n", addr_list[t].name);
printf("%s\n", addr_list[t].street);
printf("%s\n", addr_list[t].district);
printf("%s\n", addr_list[t].town);
printf("%s\n", addr_list[t].county);
printf("%s\n", addr_list[t].country);
printf("%s\n", addr_list[t].postcode);
printf("%s\n", addr_list[t].telno);
printf("%s\n", addr_list[t].email);
printf("\n");
}
}
void sort(int left, int right)
{
int i, last;
i=left;
if(left>=right) /*do nothing if array contains less than*/
return; /*two elements*/
swap(left, (left+right)/2); /*move partition element to*/
last = left; /*addr_list[0]*/
for(i=left; i<=right; i++) /*partition*/
if(strcmp(addr_list[i].name,addr_list[left].name)<0)
swap(++last, i);
swap(left, last); /*restore partition element*/
sort(left, last - 1);
sort(last+1, right);
}
void swap(int i, int j)
{
temp = addr_list[i];
addr_list[i]=addr_list[j];
addr_list[j]=temp;
i++; j--;
}
void save(void)
{
FILE *fp;
register int i;
if((fp=fopen("maillist", "wb"))==NULL) {
printf("Cannot open file.\n");
return;
}
for(i=1; i<MAX; i++)
if(*addr_list[i].name)
if(fwrite(&addr_list[i],
sizeof(struct addr), 1, fp)!=1)
printf("File write error.\n");
fclose(fp);
}
void loadbackup(void)
{
FILE *fp;
register int i;
char filename[30];
printf("Enter a file name.\n");
scanf("%s",filename);
printf("\n");
if((fp=fopen(filename, "rb"))==NULL) {
printf("Cannot open file,\n");
return;
}
init_list();
for(i=1; i<MAX; i++){
if(fread(&addr_list[i],
sizeof(struct addr), 1, fp)!=1) {
if(feof(fp)) break;
printf("File read error.\n");
}
counter=counter+1;
}
fclose(fp);
}
void load(void)
{
FILE *fp;
register int i;
if((fp=fopen("maillist", "rb"))==NULL) {
printf("Cannot open file,\n");
return;
}
init_list();
for(i=1; i<MAX; i++){
if(fread(&addr_list[i],
sizeof(struct addr), 1, fp)!=1) {
if(feof(fp)) break;
printf("File read error.\n");
}
counter=counter +1;
}
fclose(fp);
}
void txtoutput(void)
{
int t;
int count;
FILE *stream;
char filename[30];
count = 0;
printf("Enter a file name.\n");
scanf("%s",filename);
printf("\n");
stream = fopen(filename, "w+");
for(t=1; t<MAX; t++) {
if(addr_list[t].name[0]) {
count = count +1;
fprintf(stream,"%i\n",count);
fprintf(stream,"%s\n", addr_list[t].name);
fprintf(stream,"%s\n", addr_list[t].street);
fprintf(stream,"%s\n", addr_list[t].district);
fprintf(stream,"%s\n", addr_list[t].town);
fprintf(stream,"%s\n", addr_list[t].county);
fprintf(stream,"%s\n", addr_list[t].country);
fprintf(stream,"%s\n", addr_list[t].postcode);
fprintf(stream,"%s\n", addr_list[t].telno);
fprintf(stream,"%s\n", addr_list[t].email);
fprintf(stream,"\n");
}
}
fclose(stream);
return;
}
void outputtwo(void)
{
FILE *fp;
register int i;
char filename[30];
printf("Enter a file name.\n");
scanf("%s",filename);
printf("\n");
if((fp=fopen(filename, "wb"))==NULL) {
printf("Cannot open file.\n");
return;
}
for(i=1; i<MAX; i++)
if(*addr_list[i].name)
if(fwrite(&addr_list[i],
sizeof(struct addr), 1, fp)!=1)
printf("File write error.\n");
fclose(fp);
}
void search(void)
{
int low, mid, top, found,count,countdown;
char s[40];
printf("\nEnter a name.\n");
readLine(s);
low = 1;
top = counter;
do
{
found = 0;
mid = (low + top)/2;
if (strcmp(s, addr_list[mid].name)==0)
{
printf("\nRecord number: %i\n", mid);
printf("\nName: %s\n",addr_list[mid].name);
printf("\nStreet: %s\n",addr_list[mid].street);
printf("\nDistrict: %s\n",addr_list[mid].district);
printf("\nTown: %s\n",addr_list[mid].town);
printf("\nCounty: %s\n",addr_list[mid].county);
printf("\nCountry: %s\n",addr_list[mid].country);
printf("\nPostcode:%s\n",addr_list[mid].postcode);
printf("\nTelephone number: %s\n",addr_list[mid].telno);
printf("\nEmail address: %s\n",addr_list[mid].email);
printf("\n");
/*break;*/
count = mid;
countdown = mid;
do
{
countdown=countdown-1;
if(strcmp(s, addr_list[countdown].name)==0)
{
printf("\nRecord number: %i\n", countdown);
printf("\nName: %s\n",addr_list[countdown].name);
printf("\nStreet: %s\n",addr_list[countdown].street);
printf("\nDistrict: %s\n",addr_list[countdown].district);
printf("\nTown: %s\n",addr_list[countdown].town);
printf("\nCounty: %s\n",addr_list[countdown].county);
printf("\nCountry: %s\n",addr_list[countdown].country);
printf("\nPostcode:%s\n",addr_list[countdown].postcode);
printf("\nTelephone number: %s\n",addr_list[countdown].telno);
printf("\nEmail address: %s\n",addr_list[countdown].email);
printf("\n");
}
}while(strcmp(s,addr_list[countdown].name)==0);
do{
count=count +1;
if(strcmp(s, addr_list[count].name)==0)
{
printf("\nRecord number: %i\n", count);
printf("\nName: %s\n",addr_list[count].name);
printf("\nStreet: %s\n",addr_list[count].street);
printf("\nDistrict: %s\n",addr_list[count].district);
printf("\nTown: %s\n",addr_list[count].town);
printf("\nCounty: %s\n",addr_list[count].county);
printf("\nCountry: %s\n",addr_list[count].country);
printf("\nPostcode:%s\n",addr_list[count].postcode);
printf("\nTelephone number: %s\n",addr_list[count].telno);
printf("\nEmail address: %s\n",addr_list[count].email);
printf("\n");
}
}while(strcmp(s,addr_list[count].name)==0);
return;
}
else
if(strcmp(s, addr_list[mid].name)<0)
top = mid -1;
else
if(strcmp(s, addr_list[mid].name)>0)
low = mid + 1;
}while(low<=top);
}
void readLine(char buffer[])
{
char character;
int i=0;
do
{
character=getchar();
buffer[i]=character;
++i;
}
while(character !='\n');
buffer[i-1]='\0';
}
Saturday, 24 March 2012
Another version of a database written in C
A working databases can be downloaded at http://tarkastatistics.webs.com/
/****************************************************************************
* *
* File : main.c *
* *
* Purpose : Console mode (command line) program. *
* *
* History : Date Reason *
* 00/00/00 Created *
* *
****************************************************************************/
#include <stdio.h>
/****************************************************************************
* *
* Function: main *
* *
* Purpose : Main entry point. *
* *
* History : Date Reason *
* 00/00/00 Created *
* *
****************************************************************************/
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#define MAX 100
typedef struct {
char name[40];
char street[40];
char district[40];
char town[40];
char county[40];
char country[40];
char postcode[40];
char telno[40];
char email[40];
char response[1][10];
}addr_list;
addr_list address[MAX];
int counter;
void init_list(void), enter(void);
void delete(void), list(void);
void load(void), save(void), sort(void);
void loadbackup(void), outputthree(void);
void outputtwo(void), search(void);
void readLine(char buffer[]);
void swap(int u, int v);
int main(void)
{
int choice;
char s[80];
counter = 0;
init_list();
for(;;) {
printf("\n");
printf("1. Create a record\n");
printf("2. Delete a record\n");
printf("3. List the file\n");
printf("4. Save the file\n");
printf("5. Load the file\n");
printf("6. Sort the file\n");
printf("7. Search\n");
printf("8. Save to a back up file\n");
printf("9. Load from a backup file\n");
printf("10. Output to a text file for printing or import into wp\n");
printf("11. Quit\n");
do {
printf("\nEnter your choice: ");
readLine(s);
/*gets(s);*/
choice=atoi(s);
/*scanf("%i", &choice);*/
}while(choice < 0 && choice > 11);
switch(choice) {
case 1: enter();
break;
case 2: delete();
break;
case 3: list();
break;
case 4: save();
break;
case 5: load();
break;
case 6: sort();
break;
case 7: search();
break;
case 8: outputtwo();
break;
case 9: loadbackup();
break;
case 10: outputthree();
break;
case 11: exit(0);
}
}
return 0;
}
void init_list(void)
{
register int t;
for(t=0; t<MAX; ++t) address[t].name[0] ='\0';
}
void enter(void)
{
char s[40];
int i;
for(i=1; i<MAX; i++)
if(!*address[i].name)
break;
if(i==MAX)
{
printf("Subscriber array full\n");
return;
}
printf("Enter information on new customer\n");
printf("Enter name: ");
readLine(address[i].name);
printf("Enter street: ");
readLine(address[i].street);
printf("Enter district / parish: ");
readLine(address[i].district);
printf("Enter town / city: ");
readLine(address[i].town);
printf("Enter county: ");
readLine(address[i].county);
printf("Enter country: ");
readLine(address[i].country);
printf("Enter postcode: ");
readLine(address[i].postcode);
printf("Enter telephone number: ");
readLine(address[i].telno);
printf("Enter email address: ");
readLine(address[i].email);
counter=counter+1;
}
void delete(void)
{
int t;
int u;
printf("enter a record number #: ");
scanf("%i", &t);
for(u=t; u<=counter; u++){
strncpy(address[u].name, address[u+1].name, 40);
strncpy(address[u].street, address[u+1].street, 40);
strncpy(address[u].district, address[u+1].district, 40);
strncpy(address[u].town, address[u+1].town, 40);
strncpy(address[u].county, address[u+1].county, 40);
strncpy(address[u].country, address[u+1].country, 40);
strncpy(address[u].postcode, address[u+1].postcode, 40);
strncpy(address[u].telno, address[u+1].telno, 40);
strncpy(address[u].email, address[u+1].email, 40);
}
address[counter].name[0] = '\0';
address[counter].street[0] = '\0';
address[counter].district[0] = '\0';
address[counter].town[0] = '\0';
address[counter].county[0] = '\0';
address[counter].country[0] = '\0';
address[counter].postcode[0] = '\0';
address[counter].telno[0] = '\0';
address[counter].email[0] = '\0';
counter = counter -1;
}
void list(void)
{
register int t;
int count;
count=0;
for(t=1; t<=counter; t++) {
count = count +1;
printf("Record number: %i\n",count);
printf("%s\n", address[t].name);
printf("%s\n", address[t].street);
printf("%s\n", address[t].district);
printf("%s\n", address[t].town);
printf("%s\n", address[t].county);
printf("%s\n", address[t].country);
printf("%s\n", address[t].postcode);
printf("%s\n", address[t].telno);
printf("%s\n", address[t].email);
printf("\n");
}
}
void sort(void)
{
register int u;
register int v;
for(u=1; u<counter; u++)
for (v=u+1; v<=counter; v++){
if( strcmp(address[u].name, address[v].name) >0){
swap(u, v);
}
}
}
void swap(int u, int v)
{
addr_list temp;
temp = address[u];
address[u] = address[v];
address[v] = temp;
}
void save(void)
{
FILE *fp;
register int i;
if((fp=fopen("maillist", "wb"))==NULL) {
printf("Cannot open file.\n");
return;
}
for(i=1; i<MAX; i++)
if(*address[i].name)
if(fwrite(&address[i],
sizeof(address[i]), 1, fp)!=1)
printf("File write error.\n");
fclose(fp);
}
void loadbackup(void)
{
FILE *fp;
register int i;
char filename[30];
printf("Enter a file name.\n");
scanf("%s",filename);
printf("\n");
if((fp=fopen(filename, "rb"))==NULL) {
printf("Cannot open file,\n");
return;
}
init_list();
for(i=1; i<MAX; i++){
if(fread(&address[i],
sizeof(address[i]), 1, fp)!=1) {
if(feof(fp)) break;
printf("File read error.\n");
}
counter=counter+1;
}
fclose(fp);
}
void load(void)
{
FILE *fp;
register int i;
if((fp=fopen("maillist", "rb"))==NULL) {
printf("Cannot open file,\n");
return;
}
init_list();
for(i=1; i<MAX; i++){
if(fread(&address[i],
sizeof(address[i]), 1, fp)!=1) {
if(feof(fp)) break;
printf("File read error.\n");
}
counter=counter +1;
}
fclose(fp);
}
void outputthree(void)
{
int t;
int count;
FILE *stream;
char filename[30];
count = 0;
printf("Enter a file name.\n");
scanf("%s",filename);
printf("\n");
stream = fopen(filename, "w+");
for(t=1; t<MAX; t++) {
if(address[t].name[0]) {
count = count +1;
fprintf(stream,"%i\n",count);
fprintf(stream,"%s\n", address[t].name);
fprintf(stream,"%s\n", address[t].street);
fprintf(stream,"%s\n", address[t].district);
fprintf(stream,"%s\n", address[t].town);
fprintf(stream,"%s\n", address[t].county);
fprintf(stream,"%s\n", address[t].country);
fprintf(stream,"%s\n", address[t].postcode);
fprintf(stream,"%s\n", address[t].telno);
fprintf(stream,"%s\n", address[t].email);
fprintf(stream,"\n");
}
}
fclose(stream);
return;
}
void outputtwo(void)
{
FILE *fp;
register int i;
char filename[30];
printf("Enter a file name.\n");
scanf("%s",filename);
printf("\n");
if((fp=fopen(filename, "wb"))==NULL) {
printf("Cannot open file.\n");
return;
}
for(i=1; i<MAX; i++)
if(*address[i].name)
if(fwrite(&address[i],
sizeof(address[i]), 1, fp)!=1)
printf("File write error.\n");
fclose(fp);
}
void search(void)
{
int i;
int count;
char s[40];
count=0;
printf("\nEnter a name.\n");
readLine(s);
for(i=1;i<MAX;i++)
{
if(address[i].name[0]) {
count = count +1;
}
if (strcmp(s, address[i].name)==0)
{
printf("\nRecord number: %i\n", count);
printf("\nName: %s\n",address[i].name);
printf("\nStreet: %s\n",address[i].street);
printf("\nDistrict: %s\n",address[i].district);
printf("\nTown: %s\n",address[i].town);
printf("\nCounty: %s\n",address[i].county);
printf("\nCountry: %s\n",address[i].country);
printf("\nPostcode:%s\n",address[i].postcode);
printf("\nTelephone number: %s\n",address[i].telno);
printf("\nEmail address: %s\n",address[i].email);
printf("\n");
}
}
}
void readLine(char buffer[])
{
char character;
int i=0;
do
{
character=getchar();
buffer[i]=character;
++i;
}
while(character !='\n');
buffer[i-1]='\0';
}
Tuesday, 29 November 2011
Reading list for C.
1
Absolute beginners guide to C 2nd edition
Greg Perry
SAMS publishing
2
C / C++ annotated archives
A. Friedman, L. Klander, M. Michaelis, H. Schildt
Osborne
3
C by example special edition
Greg Perry
QUE
4
C for dummies volume one
Dan Gookin
IDG books
5
C for dummies volume two
Dan Gookin
IDG books
6
C programming in easy steps 3rd edition
Mike McGrath
7
Learning to program in C
N. Kantaris
Bernard Babani publishing LTD
8
Numerical recipes in C
W.H. Press, S.A. Teukolsky, W.T. Vetterling, B.P. Flannery
Cambridge
9
Programming in C third edition
Stephen G. Kochan
Developer's library
10
Programming in Objective-C 2.0 second edition
Stephen G. Kochan
Developer's library
11
Simple C
Jim McGregor, Richard McGregor, Alan Watt
Addison-Wesley
12
The C programming language second edition
Brain W. Kernighan and Dennis M. Ritchie
Prentice Hall Software series
13
The complete reference C fourth edition
Herbert Schildt
Osborne
Absolute beginners guide to C 2nd edition
Greg Perry
SAMS publishing
2
C / C++ annotated archives
A. Friedman, L. Klander, M. Michaelis, H. Schildt
Osborne
3
C by example special edition
Greg Perry
QUE
4
C for dummies volume one
Dan Gookin
IDG books
5
C for dummies volume two
Dan Gookin
IDG books
6
C programming in easy steps 3rd edition
Mike McGrath
7
Learning to program in C
N. Kantaris
Bernard Babani publishing LTD
8
Numerical recipes in C
W.H. Press, S.A. Teukolsky, W.T. Vetterling, B.P. Flannery
Cambridge
9
Programming in C third edition
Stephen G. Kochan
Developer's library
10
Programming in Objective-C 2.0 second edition
Stephen G. Kochan
Developer's library
11
Simple C
Jim McGregor, Richard McGregor, Alan Watt
Addison-Wesley
12
The C programming language second edition
Brain W. Kernighan and Dennis M. Ritchie
Prentice Hall Software series
13
The complete reference C fourth edition
Herbert Schildt
Osborne
Monday, 7 November 2011
A countdown timer written in C
/***************************************************************************
* Copyright (C) 2009 by David Ronald Smith,,, *
* david@debian *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#define DELAY 1000000000
int hcount;
int mcount;
int scount;
void delay(void);
int main(void)
{
printf("input the hours ");
scanf("%d", &hcount);
printf("input the minutes ");
scanf("%d", &mcount);
printf("input the seconds ");
scanf("%d", &scount);
for(;;)
{
scount--;
if(scount==-1) {
scount =59;
mcount--;
}
if(mcount== -1){
mcount=59;
hcount--;
}
if(hcount==0 && mcount==0 && scount==0){
break;
}
delay();
printf("\n%i\n", scount);
printf("\n%i\n", mcount);
printf("\n%i\n", hcount);
}
return 0;
}
void delay(void)
{
long int t;
for(t=1; t<DELAY; ++t);
}
* Copyright (C) 2009 by David Ronald Smith,,, *
* david@debian *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#define DELAY 1000000000
int hcount;
int mcount;
int scount;
void delay(void);
int main(void)
{
printf("input the hours ");
scanf("%d", &hcount);
printf("input the minutes ");
scanf("%d", &mcount);
printf("input the seconds ");
scanf("%d", &scount);
for(;;)
{
scount--;
if(scount==-1) {
scount =59;
mcount--;
}
if(mcount== -1){
mcount=59;
hcount--;
}
if(hcount==0 && mcount==0 && scount==0){
break;
}
delay();
printf("\n%i\n", scount);
printf("\n%i\n", mcount);
printf("\n%i\n", hcount);
}
return 0;
}
void delay(void)
{
long int t;
for(t=1; t<DELAY; ++t);
}
Saturday, 5 November 2011
A lottery program written in C
#include<stdlib.h>
#include<time.h>
#include<stdio.h>
void main()
{
int numbers[49];
int ball, run, i, j, k, flag;
run = 0;
ball = 0;
for(k=1; k<=49; k++)
numbers[k] = '\0';
printf("Here are your lottery numbers.\n");
do
{
srand((unsigned)time(NULL));
ball = rand()%49 + 1;
flag =0;
if(ball == numbers[ball])
{
flag = 1;
}
if(flag==0)
{
numbers[ball] = ball;
run = run + 1;
printf("%i\n",ball);
}
} while(run <= 6);
}
#include<time.h>
#include<stdio.h>
void main()
{
int numbers[49];
int ball, run, i, j, k, flag;
run = 0;
ball = 0;
for(k=1; k<=49; k++)
numbers[k] = '\0';
printf("Here are your lottery numbers.\n");
do
{
srand((unsigned)time(NULL));
ball = rand()%49 + 1;
flag =0;
if(ball == numbers[ball])
{
flag = 1;
}
if(flag==0)
{
numbers[ball] = ball;
run = run + 1;
printf("%i\n",ball);
}
} while(run <= 6);
}
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