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 || b >= a + c || c >= a + b)
	{
		printf("Not a triangle!\n");
	}
	else
	{
		if (a ==b &&b== c&&a==c)
		{
			printf("Equilateral triangle!\n");
			
		}
		else if (a == b || b == c || a == c)
		{
			printf("Isosceles triangle!\n");
		}
		else
			printf("Ordinary triangle!\n");
	}

    }
    return 0;
}