题解 | 三角形判断

#include <stdio.h>

int main()
{
	int a, b, c = 0; 
	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; 
}