const readline = require('readline-sync')//引用readline-sync
let arr = [['zhang', '123', 2000], ['yang', '123456', 3000]];
//登陸 
let add = function () {
  let s = 2;//輸入錯(cuò)誤的次數(shù)
  while (true) {
    console.log('請輸入用戶名：');
    let user = readline.question();
    console.log('請輸入密碼：');
    let password = readline.question();
    for (let i = 0; i < arr.length; i++) {   
      if (user === arr[i][0] && password === arr[i][1]) {
        console.log('歡迎你，登陸成功');
        mean(i);
        return;
      }
    }
    //輸入不正確，超過三次
    if (s != 0) {
      console.log(`密碼或賬戶有誤，你還有${s}次機(jī)會(huì)，請重新輸入！`);
      s--;
    } else {
      console.log('對不起，賬戶鎖定！');
      break;
    }
  }
}
//存款
let fn1 = function (i) {
  console.log('存款');
  console.log('請輸入存款金額：');
  let cunkuan = readline.question() - 0;
  arr[i][2]+= cunkuan;
  console.log('系統(tǒng)正在為你存錢請稍等。。。。。\n存錢成功您當(dāng)前余額為' + arr[i][2]);
}
//取款
let fn2 = function (i) {
  console.log('取款');
  console.log('請輸入取款金額：');
  let qukuan = readline.question() - 0;
  if (qukuan > arr[i][2]) {
    console.log('對不起你的余額不足！，請重新輸入金額或者退出');
  } else {
    arr[i][2] = arr[i][2] - qukuan;
    console.log('正在為你取錢。。。。。\n您當(dāng)前余額為：' + arr[i][2]);
  }
}
//查看
let fn3 = function (i) {
  console.log('查看');
  console.log('正在查詢。。。。\n您當(dāng)前的余額為：' + arr[i][2]);
}
//退出
let fn4 = function () {
  console.log('退出');
  console.log('歡迎你下次使用！');
}
//流程
let mean = function (i) {
  for (let yewu = 1; yewu >= 1; yewu++) {
    console.log('請選擇業(yè)務(wù)：\n1.存款： \n2.取款： \n3.查看： \n4.退出：');
    let yewu = readline.question() - 0;
    switch (yewu) {
      case 1:
        fn1(i);
        continue;
      case 2:
        fn2(i);
        continue;
      case 3:
        fn3(i);
        continue;
      case 4:
        fn4();
        return;
    }break;
  }
}
add();