كابل USB-C بالجملة الفجيرة @AlexeyShcherbak The distinction between Stopwatch and DateTime.Now cannot be over 10-20 ms, Look at your code again. And I don't treatment about milliseconds in my exam. Also my code will likely be quite a few lines of code lengthier with Stopwatch. int primary() [enum] c j; https://arqoob.com/