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I'm currently working on java legacy code and I encounter with a class that represent a formal parameter but I don't know why is that. I read about C++ Formal Parameters, but it confused me because in C++ it is the same as the argument (I'm in doubt about this affirmation) and in my legacy code it is a class, that has only a private int member that store a number (with their set & get methods) but honestly, I didn't find the why of that declaration.
967
A formal parameter is a variable that you specify when you determine the subroutine or function. These parameters define the list of possible variables, their positions, and their data types.
The term parameter (sometimes called formal parameter) is often used to refer to the variable as found in the function definition, and: argument (sometimes called actual parameter) refers to the actual input passed.
Formal parameters are always variables, while actual parameters do not have to be variables. Actual Parameter. • Parameter Written in Function Call is Called “Actual Parameter”.
When a parameter is passed to the method, it is called an argument. So, from the example above: fname is a parameter, while Liam , Jenny and Anja are arguments.
Not disagreeing with Elliot Frisch at all, but I can say it more simply:
The variable w is a "formal parameter" in the following function definition:
void foobar(Widget w) {
...
}
The value returned by nextWidget(...) is the "actual parameter" when you write the following function call:
foobar(nextWidget(...));
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