题解 | #三角形判断#

#include <stdio.h>

int main() 
{
    int a = 0;
    int b = 0;
    int 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!");
        }
    }
    return 0;
}