三个数的大小判断，输出0到100中的3的倍数，两个数的最大公约数

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>


//三个数按从大到小的输出
int main()
{
	int a = 0;
	int b = 0;
	int c = 0;
	printf("请输入三个数：");
	scanf("%d%d%d", &a, &b, &c);
	if (a<b)
	{
		int x = a;
		a = b;
		b = x;
	}
	if (a<c)
	{
		int x = a;
		a = c;
		c = x;
	}
	if (b<c)
	{
		int x = b;
		b = c;
		c = x;
	}
	printf("%d %d %d", a, b, c);
    return 0;
}
//输出0~100中3的倍数
int main()
{
	int i = 1;
	for ( i = 1; i < 100; i++)//方法1
	{
		if (i%3 == 0)
		{
         printf("%d ", i);
		
		}
	}
	printf("\n");
	for ( i = 3; i < 100; i+=3)//方法2
	{   
		printf("%d ", i);

	}
	return 0;
}
//两个数的最大公约数的输出
int main()//方法1 
{
	int a = 0;
	int b = 0;
	printf("请输入两个数：");
	scanf("%d%d", &a, &b);
	int max = 0;
	if (a > b)
	{
		max = b;
	}
	else
		max = a;
	while (1)
	{

		if (a%max == 0 && b%max == 0)
		{
			printf("最大公约数为:%d", max);
			break;
		}
		max--;
	}
	
	return 0;
}
int main()//方法2
{
	int m = 0;
	int n = 0;
	int t = 0;
	printf("输入两个数:");
	scanf("%d%d", &m, &n);
	while (t= m%n)
	{
		m = n;
		n = t;
	}
	printf("最大公约数为：%d", n);

	return 0;
}

标签：return,int,max,d%,最大公约数,倍数,printf,100
来源： https://blog.csdn.net/csdn_1997/article/details/123216001