C # function parameters

* Function parameters
* Common parameters: Value parameters and Input
* 1. Ref reference type
* The address is passed.
* To call a function, ref must display the call.
*
* 2. Out output parameters
* The address is passed.
* To call a function, make sure that the call is displayed out.
* Variables can be not initialized during the call. Initialization is recommended.
*
* 3. Params array parameters
* Params must be a parameter of a one-dimensional array.
* Last Parameter

C # function parameters