/*
   File: sure.c

   Check if the user really wanted  
   to break the bank.
*/

#include <stdio.h>
#include "genlib.h"
#include "simpio.h"
#include "strlib.h"

main() {
  int balance, entry ;
  bool done ; 
  string reply ;

  printf("Balance = ") ;
  balance = GetInteger() ;
  done = FALSE ;
  while (!done) {
     printf("Entry = ") ;
     entry = GetInteger() ;
     if (balance + entry >= 0) {
	done = TRUE ;
     } else {
	printf("Are you sure? [y/n] ") ;
	reply = GetLine() ;
	if (StringEqual(reply, "y")) done = TRUE ;
     }
  }
  balance += entry ;
  printf("balance = %d\n", balance) ;
}