Helper.swift

import Foundation

//this file is to get the user input --> processor 

//return a string --> which is the user input --> we use foundational classes provided by Apple
func getUserInput() -> String {
    
    let standardInput = NSFileHandle.fileHandleWithStandardError()
    //NSFileHandle.fileHandleWithStandardInput()
    
    //another class provided by Apple -> allows us to access NextConsole 
    //adding line breaks automatically
    var input = NSString(data: standardInput.availableData, encoding: NSUTF8StringEncoding)
    input = input!.stringByTrimmingCharactersInSet(NSCharacterSet.newlineCharacterSet())
    //as ->
    return input as! String
}