用while循环实现输入一个数跟随机数比较

import java.util.Random;
import java.util.Scanner;
public class Cai{
    public static void main(String[] args){
        //创建接收实例
        Scanner sc = new Scanner(System.in);
        //创建Random实例
        Random r = new Random();
        //生成一个随机数
        int a = r.nextInt(100);
        while(true){
            System.out.println("请输入一个1-99的数字");
            int b = sc.nextInt();
            if(a==b){
                System.out.println("猜对了");
                break;
            }else if(a<b){
                System.out.println("猜大了");
            }else if(a>b){
                System.out.println("猜小了");
            }
                        
        }
        
    }
}