04/02 pair programming of UnitConverter

main.swift

//
//  main.swift
//  UnitConverter
//
//  Created by Doran & Dominic on 02/04/2019.
//  Copyright © 2019 hw. All rights reserved.
//

import Foundation

let str = readLine()

func convertCmToM (str: String) -> Void {
        let doubleValue : Double = NSString(string: str as NSString).doubleValue
        let result = Double(doubleValue/100)
        print ("\(result)m")

}

func convertMToCm (str: String ) -> Void {
        let doubleValue : Double = NSString(string: str as NSString).doubleValue
        let result = Double(doubleValue*100)
        print ("\(result)cm")

}

func unitConverter (input: String) -> Void {
    let strArr = input.split(separator: " ")
    if strArr.count == 0{
        return
    }else{
        for str in strArr {
            // Grab the last two or one characters
            if str.suffix(2) == "cm"  {
                convertCmToM(str: String(str))
            }
            else {
                convertMToCm(str: String(str))
            }
        }
    }
}

if let test = str as? String {
    unitConverter(input: test)
}