练习-1

1.猜随机数

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
	// 产生四个随机数放在一个数组中
	int num = 0;
	int rand_num[4];
	int guess_num[4];
	srand(time(NULL));
	for(int i = 0;i<4;i++)
	{
		rand[num] = rand()%10;
	}
	
	// 
	printf(请输入一个四位数:\n");
	scanf("%d",&num);
	
	guess_num[0] = (num/1000)%10;
	guess_num[1] = (num/100)%10;
	guess_num[2] = (num/10)%10;
	guess_num[3] = num % 10;
	
	n = 0;
	while(1)
	{
		for(int j = 0; j < 4; j++)
		{
			if(guess_num[j] > rand_num[j])
			{
				printf("第%d位大于正确数字\n",j+1);
			}
			else if (guess_num[j] < rand_num[j])
			{
				printf("第%d位大于正确数字\n",j+1);
			}
			else 
			{
				printf("第%d位正确数字\n");
				n++
			}
			
		}	
		
		if(n == 4){
			printf("恭喜你,猜对了!\n");
			sleep(2);
			return 0; // 结束程序
		}
	}

}