Passing Parameters

Passing Methods

Values can be passed to a function through two methods.

By default, values are passed to a function through a method called:

• pass by value.

This means that:

• value of the variable is passed, not the variable itself.

This would be like giving a person a copy of your driver’s license. They can read all of your information, ​and they can change whatever they want on their copy, but the original is not altered in any way.

If desired, a value can be passed through the other method called:

• pass by reference

This means that:

• Function is actually given the address of the variable, allowing it direct access to the information.
• Placing a & after the data type in the function definition allows direct access (this must also be present in any forward declaration).