private void doOperation(operation curentOp, float curentValue) { if (PastOperation.Equals(operation.Null)) { Console.WriteLine(Totalizator); Totalizator = curentValue; } else if (PastOperation.Equals(operation.Plus)) { Console.WriteLine("initial" + Totalizator); Totalizator = Totalizator + curentValue; Console.WriteLine("final" + Totalizator); } else if (PastOperation.Equals(operation.Minus)) { Console.WriteLine("initial" + Totalizator); Totalizator = Totalizator - curentValue; Console.WriteLine("final" + Totalizator); } else if (PastOperation.Equals(operation.Div)) { Console.WriteLine("initial" + Totalizator); Totalizator = Totalizator / curentValue; Console.WriteLine("final" + Totalizator); } else if (PastOperation.Equals(operation.Prod)) { Console.WriteLine("initial" + Totalizator); Totalizator = Totalizator * curentValue; Console.WriteLine("final" + Totalizator); } PastOperation = curentOp; }