Reference Parameters

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Data Access, Properties, and Methods - slide 24 : 29

Reference Parameters

Reference parameters can be used for both input to and output from methods

Reference parameter passing
- The corresponding argument must be a variable, and it must have a value
- The types of the formal parameter and the argument must be identical
- The formal parameter becomes another name (an alias) of the argument
- The actual parameter must be prefixed with the keyword ref

The class A with a Swap method.

Output of class A with Swap.