题解 | #三角形判断#

#include <stdio.h>

int main()
{
    int a = 0;
    int b = 0;
    int 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 || a==c && a!=b || b==c && a!=c)
            printf( "Isosceles triangle!\n" );
            else
            printf( "Ordinary triangle!\n" );
        }
        else 
        printf( "Not a triangle!\n" );
    }
    return 0;
}