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 && a == 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;
}