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What is the use of ?? operator in C#?

Interview question and answer by: Abhisek | Posted on: 1/21/2010 | Category: C# Interview questions | Views: 2042 |
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Answer:

This operator allows you to assign a value to a nullable type if the retrieved value is in fact null.

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Posted by: Nandakumarpb | Posted on: 20 Aug 2010 12:20:31 AM | Points: 10 | Alert Moderator 

Double question mark(??) is not for the nullable type. See MSDN
The ?? operator returns the left-hand operand if it is not null, or else it returns the right operand.
And This is a kind of Immediate if statement in VB6(?) IIF.
nullable type is declaration using single question mark(?).

I hope I am correct .
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