程序代码：

#include"stdio.h"
void main()
{
  char quit='N';
  while(quit=='N')
  {
    printf(" QUIT?\tPress Y or N.\n");
    quit=getchar();
    if(quit=='Y')
      break;
    if(quit=='N')
      {
        printf("Press any key to CONTINUE!\n");
        getch();
      }
  }
}

程序代码：

#include <stdio.h>

int main(int argc, char* argv[]) {
    char quit = 0;
    while (quit != 'y') {
        printf(" QUIT?\tPress y or n.\n");
        quit = getchar();
        while (getchar() != '\n');
    }
}

程序代码：

#include <stdio.h>

int main(int argc, char* argv[]) {
    char quit = 0;
    while (quit != 'y') {
        printf(" QUIT?\tPress y or n.\n");
        quit = getchar();
        while (getchar() != '\n');
        if (quit != 'y') {
            printf("Press any key to continue...");
        }
        getch();
        printf("\n");
    }
}