题解 | #三角形判断#

#include <iostream>
using namespace std;
int main()
{
    int a,b,c;
    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)
        {
            if(a==b&&a==c&&b==c)
            {
                printf("Equilateral triangle!\n");
            }
            else
                cout<<"Isosceles triangle!"<<endl;
            
        }
            else
                   printf("Ordinary triangle!\n");
        }
        else
            cout<<"Not a triangle!"<<endl;
    }
    return 0;
}