题解 | 三角形判断

#include <stdio.h>

int main()
{
	int a, b, c;
	
	while (scanf("%d %d %d", &a, &b, &c) != EOF)
	{
		if (a + b > c && a + c > b && b + c > a)
		{
			if (a == b && b == c)
			{
				printf("Equilateral triangle!\n");
			}
			else if (a == b || a == c || b == c)
			{
				printf("Isosceles triangle!\n");
			}
			else
			{
				printf("Ordinary triangle!\n");
			}
		}
		else
		{
			printf("Not a triangle!\n");
		}
	}
	return 0;
}