public class zy7 { public static void main(String[] args){ System.out.println("请输入三边"); Scanner sc = new Scanner(System.in); int a = Integer.parseInt(sc.next()); int b = Integer.parseInt(sc.next()); int c = Integer.parseInt(sc.next()); if((a+b>c)&&(a+c>b)&&(b+c>a)){ System.out.println("能构成三角形"); }else{ System.out.println("不能构成三角形"); } } }