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 (0 < a && c < 1000)
    {
        if (a + b > c && a + c > b && b + c > a)
        {
            if ((a == b&&b!=c) || (b == c&&a!=c) ||( a == c&&b!=c))
            {
                printf("Isosceles triangle!\n");
            }
            else if (a == b && b == c && a==c)
            {
                printf("Equilateral triangle!\n");
            }
            else
            {
                printf("Ordinary triangle!\n");
            }
        }
        else
        {
            printf("Not a triangle!\n");
        }
    }
    }
    return 0;
}