题解 | #三角形判断#

#include<stdio.h>
int main()
{
	int x = 0;
	int y = 0;
	int z = 0;
	while(scanf("%d %d %d", &x, &y, &z)!=EOF)
	if (x + y > z && x + z > y && y + z > x)
	{

	    if ((x == y || x == z || y == z))
		{
			if (x == y&&y == z)//不能连等于
			{
				printf("Equilateral triangle!\n");
			}
			else
			{
				printf("Isosceles triangle!\n");
			}
			
		}
		else
		{
			printf("Ordinary triangle!\n");
		}
	}
    else 
    {
        printf("Not a triangle!\n");
    }
    
 }