Q:

What is double(C++) in C#?

What is the double type(C++) in C#?
double experience;

At first,I thought its UInt32,but its not.
How to declare it in C#?

A:

This is a question that is dependent upon the particular C++ compiler implementation you are using.  The double type can be either 4 or 8 bytes according to the C++ standard.  Most compilers do use 8 bytes though.  Here are the closest representations

4 bytes: float
8 bytes: double

Reference: http://msdn.microsoft.com/en-us/library/cc953fe1.aspx

A:

It is just double or Double. More specific double is a C# specific alias for System.Double.

