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 && 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!");
      }
    
    return 0;
}