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 - b < c)
     {if (a == b&&a == c&&c == b)
     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;
}