Using NULL Coalescing Operator

As i was reading the great book “CLR via C#” by Jeffery Richter, i stumbled upon one of these very subtle nuances and useful technique introduced in C#, it is called the NULL Coalescing Operator denoted by “??” (refer C# Reference (MSDN))
As per the definition the “Null Coalescing ” returns the value denoted by the [...]