Javascript/30DaysofJS/main.js

// Declaring different variables of different data types
let firstName = 'Asabeneh' // first name of a person
let lastName = 'Yetayeh' // last name of a person
let country = 'Finland' // country
let city = 'Helsinki' // capital city
let age = 100 // age in years
let isMarried = true

// Declaring variables with number values
const gravity = 9.81 // earth gravity  in m/s2
const boilingPoint = 100 // water boiling point, temperature in oC
const PI = 3.14 // geometrical constant

// Variables can also be declaring in one line separated by comma
let name = 'Asabeneh', //name of a person
  job = 'teacher',
  live = 'Finland'