猜数游戏代码

import java.util.Scanner;

public class Namble1 {
    public static void main(String[] args) {
        int count = 1;
        System.out.println("游戏>登录");
        System.out.println("请输入用户名：");
        Scanner input = new Scanner(System.in);
        String name = "zhangsan";
        name = input.next(); 
        System.out.println("请输入密码：");
        String mima = "123456";
        mima = input.next();
        if ("zhangsan".equals(name)) {
            if ("123456".equals(mima)) {
                System.out.println("********************************************");
                System.out.println("游戏>登陆成功>猜数游戏");
                System.out.println("游戏开始——已随机生成一位17-97的数字");
                System.out.println("********************************************\n");
                int num;
                int randNum = (int) (Math.random() * (97 - 17+ 1) + 17);
                do {
                    System.out.println("请第"+count+"输入您猜的数字：");
                    num = input.nextInt();
                        if (num > randNum) {
                            System.out.println("太大了...");
                        }else if (num<randNum){
                            System.out.println("太小了...");
                            }
                    count++;
                } while (num != randNum && count<20);
                if (count == 1) {
                    System.out.println("你太有才了");

                }
                if (2 <= count && count >= 6){
                    System.out.println("这么快就猜出来了，很聪明嘛");
                }
                if (20>count&&count >= 7) {
                        System.out.println("小同志，还需努力呀");
                    }
                if(count>20){
                    System.out.println("次数用尽");
                }
            }
        } else {
            System.out.println("登录游戏失败，退出游戏");

        }
        System.out.println("——游戏结束——");
    }
}