C语言：猜数字游戏

#include<stdio.h>
#include<windows.h>
#include<stdlib.h>
#include<time.h>

void game()
{

  {
int ret = 0;
int guess = 0;
ret = rand() % 100 + 1;
while (1)
    {
printf("请猜数字:>");
scanf("%d", &guess);
if (guess > ret)
printf("猜大了\n");
else if (guess < ret)
printf("猜小了\n");
else
      {
printf("           恭喜你，猜对了！！！");
Sleep(2000);
break;
      }
    }

  }
}

void menu()
{
printf("#######################################\n");
printf("##         猜数字游戏(1-100)         ##\n");
printf("##      1.play           0.exit      ##\n");
printf("#######################################\n");
printf("请选择:>");
}

int main()
{
int input = 0;
do
  {
srand((unsigned int)time(NULL));
Sleep(2000);
system("cls");
menu();
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;
}