猜数字小游戏

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

void menu()
{
	printf("****************************\n");
	printf("********猜数字小游戏*********\n");
	printf("********** 1.play **********\n");
	printf("********** 0.exit **********\n");
	printf("****************************\n");
}

//RAND_MAX-rand函数能返回随机数的最大值。
void game()
{
	int random_num = rand() % 100 + 1;
	int input = 0;
	while (1)
	{
		printf("请输入一百以内的整数：");
		scanf_s("%d",&input);
		if (input > random_num)
		{
			printf("猜大了\n");
		}
		else if(input < random_num)
		{
			printf("猜小了\n");
		}
		else
		{
			printf("恭喜你，猜对了！\n");
			break;
		}
	}
}

int main()
{
	int input = 0;
	srand((unsigned)time(NULL));
	do
	{
		menu();
		printf("请选择：");
		scanf_s("%d",&input);
		switch (input)
		{
		case 1:
			game();
			break;
		case 0:
			break;
		default:
			printf("选择错误，请重新输入！\n");
			break;
		}
	} while (input);
	return 0;
}