输出相对的最小整数

#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<math.h>

int main()
{
	float num = 0;
	printf("请输入一个小数：\n");
	scanf("%f", &num);

	/*向上取整*/
	int up = ceil(num);
	printf("up = %d\n", up);
	/*向下取整*/
	int down = ceil(num);
	printf("down = %d\n", down - 1);
	return 0;
}