猜数字游戏

#include <stdio.h>#include <stdlib.h>#include <time.h>int main(){    printf("请选择：\n");    printf("**1**  play\n");    printf("**0**  exit\n");    int input = 0;    scanf("%d", &input);    switch (input)    {    case 1:    {              srand((unsigned)time(NULL));//产生随机数              int ret = rand() % 100;              int n = 0;              printf("你猜:\n");              while (1)              {                  scanf("%d",&n);                  if (n > ret)                  {                      printf("猜大了！\n");                  }                  else if (n < ret)                  {                      printf("猜小了！\n");                  }                  else                  {                      printf("猜对了！\n");                      break;                  }              }              printf("%d\n",ret);    }        break;    case 0:        break;    default:        break;    }    system("pause");    return 0;}