题解 | #三角形判断#

#include <stdio.h>
int main() {
    int a = 0, b = 0, 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!\n");
    }
    return 0;
}