Please explain what the ref and out modifier is for?

Question

C++ / C#

In Troelson's book, which I started reading, I did not fully understand why these modifiers (ref, out) are needed at all. So if possible, give a small example of how they are used, along with an explanation of why they are needed. Thanks in advance!

Answer 1

Everything is very well described in the
docs https://docs.microsoft.com/ru-ru/dotnet/csharp/lan...
https://docs.microsoft.com/ru-ru/dotnet/csharp/lan...
Try it.
If you still don't understand, come back.)