I m new to programming my question may be a little noob type.but i want to ask how a app or a game is created.by which lang.?

Answer 1

There are plenty of languages you can use for making an app or a game. For the beginning just pick one and try to become good at it. C# is often used for games for example.

Answer 2

android apps are mostly created using java.swift is used for ios apps, c# for windows.