题解 | #三角形判断#

#include <stdio.h>

int main() 
{
    int a, b, c, d;
    while(scanf("%d%d%d", &a, &b, &c) == 3)
    {
        if(a + b > c && b + c >a && a + c > b)
        {
            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");
        }
        else
        {
            printf("Not a triangle!\n");
        }
    }
    return 0;
}