题解 | 三角形判断

#include <stdio.h>

int main() {
    int a, b,c;
    while (scanf("%d %d %d\n", &a, &b,&c) != EOF) { 
    if(a < b + c && b < a + c && c < a + b){
      if(a == b && a == c && 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;
}