index.js

var readlineSync = require('readline-sync');
var score = 0;
var userName = readlineSync.question("What is your name? ");
var welcomeMsg = "Welcome to the quiz " + userName + "! Let's see how will you answer";

var highScore = [
  {
    name: "aditya",
    score: 5,
  },
  {
    name: "chandan",
    score: 3,
  }
]
function quiz1(questions, answer) {
  var userAns = readlineSync.question(questions);
  if (answer.toUpperCase() === userAns.toUpperCase()) {
    console.log("correct answer");
    score++;
    console.log(score);
  }
  else {
    console.log("wrong answer");
    score--;
    console.log(score);

  }

}

var questionList = [
  {
    question: "what is tony stark best suit?  ",
    answer: "marklxxxv"
  },
  {
    question: "which company car is mostly used by tony stark ",
    answer: "audi"
  },
  {
    question: "what is tony stark if not Irnoman ",
    answer: "scientist"
  },
  {
    question: "which year iron man 1 is released? ",
    answer: "2008"
  },
  {
    question: "What is the name of tony stark daughter? ",
    answer: "morgan stark"
  },
  {
    question: "What is the name of Ironman 1st suit? ",
    answer: "mark one"
  },
  {
    question: " What is the name of the suit he used to defeat hulk",
    answer: "hulk buster suit "
  }
];
for (var i = 0; i < questionList.length; i++) {
  quiz1(questionList[i].question, questionList[i].answer)
}
console.log("total score is ", score);
for (var j = 0; j < highScore.length; j++) {
  console.log(highScore[j].name + ":" + highScore[j].score);
}