题解 | #三角形判断#

int main() { int a = 0; int b = 0; int c = 0; while (scanf("%d%d%d", &a, &b, &c)!=-1) { if ((a + b > c) && (a + c > b) && (b + c > a)) { if (a == b && b == c) { printf("Equilateral triangle!\n"); } else if ((a != b) && (b != c) && (a != c)) { printf("Ordinary triangle!\n"); } else printf("Isosceles triangle!\n"); } else printf("Not a triangle!\n"); } return 0; }