题解 | 三角形判断

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int a = scanner.nextInt();
        int b = scanner.nextInt();
        int c = scanner.nextInt();

        if (a + b > c && a + c > b && b + c > a){
            if (a == b && b == c){
                System.out.println("Equilateral triangle!");
            } else if (a == b || a == c || b == c) {
                System.out.println("Isosceles triangle!");
            } else{
                System.out.println("Ordinary triangle!");
            }
        }else {
            System.out.println("Not a triangle!");
        }
    }
}