A basic C++ question

[3DModelerMan]

Hi I had a question, why do I never see people use if statements or other logic statements inside classes?, do classes not allow this?.
Thanks .

[jaeg]

I believe that those statements can only be in class functions.

[Halifax]

I really can't take this thread as even remotely serious. The answer to your question, 3DModelerMan, lies here.

[zeno60]

I really can't take this thread as even remotely serious. The answer to your question, 3DModelerMan, lies here.

Most certainly the answer to all your past, present, and future questions have, and will lay here.

[wyrmmage]

That's what preprocessor commands like #ifdef and #ifndef are for (and no, you can't have logic inside of your class definition unless it's inside a function definition)
-wyrmmage

[Halifax]

I really can't take this thread as even remotely serious. The answer to your question, 3DModelerMan, lies here.

Most certainly the answer to all your past, present, and future questions have, and will lay here.

Haha, yes, I stand corrected.

[rogerborg]

Hi I had a question, why do I never see people use if statements or other logic statements inside classes?, do classes not allow this?.
Thanks .

Presumably you mean inside a class declaration but outside any function definition?

It only makes sense to have executable code inside a function, because otherwise there's no way to call and run the code. So you don't see any code outside of a function (whether global, class static or class instance).

Code: Select all

class Foo
{
public:
    printf("At what point in your program execution would you expect this code to ever be run?");

    Foo()
    {
        printf("If you want code that's run when an instance is created, put it in the constructor.");
    }
};

printf("Or for that matter, how would you run this global code?");

[kingdutch]

That's basicly it, for more info on classes let's try our friend Google
*click*

[3DModelerMan]

Thanks, I guess I should have searched a little more, but I was just wondering why I had'nt seen any.
Thanks .