You can determine whether a variable is being passed by value or reference by looking at the calling statement.

Question

Quizplus · Accepted Answer

The way a variable is passed (by value or by reference) doesn't depend on the calling statement, but on the language and the way the function is defined. In some languages, variables are always passed by value, while in others they can be passed by reference. It's important to know the rules of the language and the specific function being called in order to determine how a variable is being passed.

You Can Determine Whether a Variable Is Being Passed by Value