C - Pergunta YES ou NO

/* YORN - a program to get a yes or no answer */

#include stdio.h
#include conio.h

#define TRUE 1        //this is "true" in C
#define FALSE !TRUE   //this is "not true"

void main() {

  char c;

  printf("Please answer Y for Yes or N for No:");

  while(TRUE)//this means "loop forever"
  {
    c=getch();
    if(c=='Y' || c=='y') break;
    if(c=='N' || c=='n') break;
  }
  printf("%c\n",c);
}