猜数字小游戏

#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
#include<stdlib.h>
#include<time.h>
void menu()
{
  printf("*******************************************\n");
  printf("*********      1.play           ***********\n");
  printf("*********      0.exit           ***********\n");
  printf("*******************************************\n");
}
void game()
{
  int guess = 0;
  int r = rand() % 100 + 1;
  while (1)
  {
    printf("猜数字:>");
    scanf("%d", &guess);
    if (guess < r)
    {
      printf("猜小了\n");
    }
    else if (guess > r)
    {
      printf("猜大了\n");
    }
    else
    {
      printf("恭喜你，猜对了\n");
      break;
    }
  }
}
int main()
{
  int input = 0;
  srand((unsigned int)time(NULL));
  do
  {
    menu();
    printf("请选择:>");
    scanf("%d", &input);
    switch (input)
    {
    case 1:
      game();
      break;
    case 0:
      printf("退出游戏\n");
      break;
    default:
      printf("选择错误\n");
      break;
    }
  } while (input);
  return 0;
}