用Java编写银行存钱取钱

const readline = require('readline-sync')//引用readline-sync

let s = 2;//错误的次数

for (let i = 0; i < 3; i++) {

console.log('请输入名：（由英文组成）');

let user = readline.question();

console.log('请输入密码：（由数字组成）');

let password = readline.question();

let arr = ['yang', '123456'];

if (user == arr[0] && password == arr[1]) {

console.log('欢迎您，登陆成功');

for (let yewu = 1; yewu >= 1; yewu++) {

console.log('请选择业务：\n1.存款： \n2.取款： \n3.查看： \n4.退出：');

let yewu = readline.question() - 0;

let money = 3000;

if (yewu > 4) {

console.log('对不起你输入的有误，请重新输入：')

continue;

}

switch (yewu) {

case 1:

//存款money2为钱变化后的总数

console.log('存款');

console.log('请输入存款金额：');

let cunkuan = readline.question() - 0;

money2 = money + cunkuan;

console.log('系统正在为你存钱请稍等。。。。。\n存钱成功您当前余额为' + money2);

continue;

case 2:

console.log('取款');

console.log('请输入取款金额：');

let qukuan = readline.question() - 0;

if (qukuan > money2) {

console.log('对不起你的余额不足！，您的余额不足，请重新输入或者退出');

} else {

money2 = money2 - qukuan;

console.log('当前余额为：' + money2);

}

continue;

case 3:

console.log('查看');

console.log('当前你的余额为：' + money2);

continue;

case 4:

console.log('退出');

console.log('欢迎你下次使用！');

break;

}break;

}

break;

} else {//输入不正确时

if (s != 0) {

console.log('密码或账户名错误，您还有' + s + "次机会,请重新输入：");

s--;

continue;

} else {

console.log('对不起，账户已锁定！');

break;

}

}

}