Swift programmatically navigate to another view controller with navigation bar with back button / without navigation bar

Navigate to another view controller with navigation bar with backbutton

 let storyBoard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)

let vc = storyBoard.instantiateViewController(withIdentifier: "secondviewcontrollerid") as! secondviewcontroller

        

vc.message="value"

       

self.navigationController?.pushViewController(vc, animated: true)

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Navigate to another view controller without navigation bar

let vc=storyBoard.instantiateViewController(withIdentifier: "secondviewcontrollerid") as! secondviewcontroller

        

vc.message="value"

       

self.present(vc, animated: true, completion: nil)