#include<stdio.h>
#include<stdlib.h>
#include<time.h>
void menu() {
    
    
	printf("**********************************\n");
	printf("****    1.play    0.退出游戏   ***\n");
	printf("**********************************\n");
}
void game() {
    
    
	int ret = 0, x = 0;
	ret = rand()%100+1;
	while (1)
	{
    
    
		printf("\n请输入一个数字：\n");
		scanf("%d", &x);
		if (x > ret) {
    
    
			printf("猜大了。");
		}
		else if (x < ret)
		{
    
    
			printf("猜小了。");
		}
		else
		{
    
    
			printf("恭喜你，猜对了。");
			break;
		}
	}
}
int main() {
    
    
	int input = 0;
	srand((unsigned int)time(NULL));
	do {
    
    
		menu();
		scanf("%d", &input);
		switch (input)
		{
    
    
		case 1:game();
			break;
		case 0:printf("您已退出游戏。\n");
			break;
		default:printf("输入有误，请重新输入。\n");
			break;
		}

	} while (input);
	return 0;
}