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 && c + b > a)
        {
            if (a == b && b == 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;
}