Telephone Directory ( TurboC )

[rickdragon]

/* proj_2.c - Telephone Directory */

#include<stdio.h>
#include<conio.h>
#include<string.h>
#include<stdlib.h>
#include<ctype.h>

void add_num(void) , lookup(void);
int menu(void);
main()
{
char ch;
do
{ ch = menu();
switch(ch) {
case 'a' : add_num(); break;
case 'l' : lookup(); break ;
}
} while ( ch != 'q');
}
// DISPLAY MENU & GET REQUEST
menu(void)
{
char ch;
do {
printf(" (A)dd , (L)ookup , (Q)uit : ");
ch = tolower(getche());
printf("\n");
} while(ch != 'q' && ch != 'a' && ch != 'l');
return ch ;
}

// Add a name and number

void add_num(void)
{
FILE *fp;
char name[80];
int a_code , exchg , num ;
// open for append
if((fp=fopen(" phone","a"))==NULL) {
printf(" can not open file \n ");
exit(1);
}
printf("Enter name and number ");
fscanf(stdin, "%s %d %d %d ",name,&a_code,&exchg, &num);
fscanf(stdin, "%*c"); // remove CR from input stream

// write to file
fprintf(fp,"%s %d %d %d \n",name,a_code,exchg,num);
fclose(fp);
}

// find number given a name
void lookup(void)
{
FILE *fp;
char name[80], name2[80];
int a_code , exchg , num ;
// open for read
if((fp = fopen("phone ","r"))==NULL) {
printf("can not open a file \n");
exit(1);
}
printf("name ..?");gets(name);
// lookup for number
while(!feof(fp)) {
fscanf(fp, "%s %d %d %d ",name2,&a_code,&exchg, &num);
if(!strcmp(name,name2)) {
printf("%s : (%d) %d - %d \n ",name,a_code,exchg,num);
break;
}
}
fclose(fp);
}