C语言—猜数字小游戏

#include <stdio.h>
#include <time.h>
#include <stdlib.h>
void menu()
{
	printf("########################\n");
	printf("#####1.play  0.exit#####\n");
	printf("########################\n");
}
void game()
{
	int ret = 0;
	ret = rand()%100+1;//生成1-100的随机数
	while (1)
	{
		int guess = 0;
		printf("请猜猜数字:>");
		scanf("%d", &guess);
		if (guess > ret)
			printf("猜大了\n");
		else if (guess < ret)
			printf("猜小了\n");
		else
		{
			printf("恭喜答对了\n");
			break;
		}
	}
}
int main()
{
	int input = 0;
	srand((unsigned int)time(NULL));//unsigned int类型重定义  NULL空指针
	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;
}