Do yo know the concepts of Value & Reference types in C# clearly?
Even novice developer in C# knows it, rite?
Then, let me ask you to quick simple question in that.
Can you tell me the output of this program, without running it. Unfortunately, more than 50% of the developers will not answer it correctly.
If you had guessed “Null reference exception”, you must read this book.
The correct answer is : 15 & 20 will get printed on the screen.
To find out why, download and read this short ebook