public static Odinak Instance() { if (_odinak == null) { _odinak = new Odinak(); return(_odinak); } else { return(_odinak); } }
static void Main(string[] args) { Odinak first = Odinak.Instance(); if (first != null) { first.D = 25; first.Print("first"); } else { WriteLine("first == null"); } }