let a = "string";
let b = true;
let c = null;
let d = undefined;

let firstName = "Eligijus";
let lastName = "Dzikavicius";
let isMarried = false;
let age = 17;
let live = "Lithuania"

let myAge = 17;
let yourAge = 30;

console.log("I am " + myAge + " years old.");
console.log("You are " + yourAge + " years old.");