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

struct subscriber
{
char phonenumber[50]; char name[20]; float amount;
}s;
void add(); void list(); void deleterec(); int main()
{
int phonenumber; char choice;

system("cls"); printf("\n\n\n\n\n\n\n"); printf("\n\t\t\t* Mark Rude Personal Ledger *"); printf("\n\n"); while (1) { printf("\n Enter:"); printf("\n A - Add new record"); printf("\n L - List records"); printf("\n D - Delete all records"); printf("\n E - Exit\n"); scanf("%c", &choice); choice=toupper(choice); switch(choice) { case 'A': add();break; case 'L': list();break; case 'D': deleterec();break; case 'E': exit(0); default: system("cls"); } }
}
void add()
{
FILE *f; char test; f=fopen("c:/mark.txt","ab+"); if(f==0) { f=fopen("c:/mark.txt","wb+"); system("cls"); } system("cls"); printf("\n Enter phone number:"); scanf("%s",&s.phonenumber); printf("\n Enter name:"); fflush(stdin); scanf("%[^\n]",&s.name); printf("\n Enter amount:"); scanf("%f",&s.amount); fwrite(&s,sizeof(s),1,f); fflush(stdin); system("cls"); printf("1 record successfully added\n"); fclose(f); printf("Hit any key to return"); getchar();
}
void list()
{
FILE *f; int i; if((f=fopen("c:/mark.txt","rb"))==NULL) { system("cls"); printf("No accounts available\n"); } else { system("cls"); printf("Phone Number\t\tUser Name\t\t\tAmount"); while(fread(&s,sizeof(s),1,f)==1) { printf("\n%-10s\t\t%-20s\t\t%.2f ",s.phonenumber,s.name,s.amount); } printf("\n");

fclose(f); } printf("\n"); getchar();
}
void deleterec()
{
FILE *f,*t; system("cls"); printf("Deleted all accounts"); remove("c:/mark.txt"); printf("\n"); getchar();
}