Passing global variables

[rpm27]

I am trying to do an assignment where I declare at first 4 variables (actually they are linked lists), and try to pass them through 10 functions where only the last one actually uses them.
Is there a way so that all my functions don't have to hold 4 parameters which they do not use, but they only pass? a kind of global variable accessed from anywhere (even if my functions are located in a header file)?

I tried to declare them as global variables outside the main, and I tried to declare them on a separate namespace, but it still gives me errors

Thank you for your time.

[Savage]

I am trying to do an assignment where I declare at first 4 variables (actually they are linked lists), and try to pass them through 10 functions where only the last one actually uses them.
Is there a way so that all my functions don't have to hold 4 parameters which they do not use, but they only pass? a kind of global variable accessed from anywhere (even if my functions are located in a header file)?

I tried to declare them as global variables outside the main, and I tried to declare them on a separate namespace, but it still gives me errors

Thank you for your time.

If they are in same file as main,are they above includes that uses them?
If you can't manage this, declare the globals into a header file,where your functions are and then include it into the main file..

Savage

[RRick]

This is where objects in C++ come in handy. Take the 4 lists and make them part of an object, either as static or local variables.

Now all of the static/local methods in that object will have access to those lists without having to explicitly pass them.

For example, the static Convert method would be alble to access List1_ and List2 without any parameter passing.

class ProcessSomething
{
    static List<Int> List1_;
    static List<Int> List2_;  //  etc.
 
public:
    static Convert( void);
};

[rpm27]

Great idea, I'll create a class (I'll call it Main) with private members the 4 lists, and all the functions are public. But so I don't have to call each function Main.function(), should've the functions be friend functions?
I'll try it right away. Thank you

[RRick]

I suppose there are ways/tricks to get rid of the Main:: prefix, but I actually prefer it. I use it like you would a namespace. BTW: For static routines you will use a Main::function declaration.

To avoid name duplication, you can make the class name more descriptive and then simplify the function name. For example, instead of Main::accountBalanceReport, you could have an class Account and then the function would be balanceReport. To me, Account::balanceReport makes a lot of sense. You are not stuck with one class for all of the functions

[rpm27]

I retried to declare them with global variables and it worked.
I has to add the #if !defined statements.
Thank you.