How to call a non-member function that takes in an object within a method

Question

Say I have a class Student, and I have already declared a non-member function called "function_A" that takes in as an argument, type Student.

Now say INSIDE the Student class, I had a member function, and in it, I wanted to reference the non-member function, "function_A", declared earlier. What would I pass in as the argument (the argument itself must be type Student).

code

This type of question works best with some sample code to illustrate the problem. — Björn Pollex, Apr 28 '11 at 09:13

score 3 · Answer 1 · answered Apr 28 '11 at 08:52

3

Do you mean something like this?

void function_A(Student s);

class Student { 
   void function_A() {
        ::function_A(*this);
   }

if the member function's name is different than function_A, I can't see any problem.

answered Apr 28 '11 at 08:52

Simone

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ah, is the "*this" just a reference to the object we're dealing with? – google11video Apr 28 '11 at 08:54
hmm... actually i'm still getting an error saying "variable or field 'function_A()' declared void" – google11video Apr 28 '11 at 09:08
seems like its a problem with the Student s argument that's being passed in... hmm – google11video Apr 28 '11 at 09:10
@Simone: In this case, you do not pass by reference, but by value. A copy of the student will be created. – Björn Pollex Apr 28 '11 at 09:14
@Simone @Space_C0wb0y Yeah that's true. But even without the &, the program should at least run. Right now, i am getting the error mentioned above (with or without &). – google11video Apr 28 '11 at 09:17
@google: Then you should post your actual code (edit it into your question) so that we can help you. If the code is long, try to construct a minimal working example that reproduces the error, and post that. – Björn Pollex Apr 28 '11 at 09:25
@Space_C0wb0y Okay I will do that. – google11video Apr 28 '11 at 23:54
Please see code here: http://stackoverflow.com/questions/5826452/how-come-my-code-does-not-work – google11video Apr 29 '11 at 00:07

How to call a non-member function that takes in an object within a method

1 Answers1