java程序|猜数字大小的小程序（支持随机数生成）|scanner类讲解

        int guess;
        Scanner sc=new Scanner(System.in);
        int a= (int) ((Math.random() * 10) + 10);
        System.out.println("请输入一个10-19之间的数");
        do { guess = sc.nextInt();
            if (guess > a) {
                    System.out.println("猜大了，再小一点！");
            } else if(guess<a){
                System.out.println("猜小了，再大一点！");
            }
        }while (guess != a) ;
        System.out.println("恭喜！猜对了,是"+a);