Thread: Compiling Order or Something??!

  1. #1
    Anal comment spacer DominicTrix's Avatar
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    Compiling Order or Something??!

    I have two classes, class1 and class2. Both need to reference an object of the other class and it won't compile, i.e.

    Code:
    class Class1
    {
       public:
          void MyFunction(Class2 obj);
    };
    
    class Class2
    {
       Class1 obj;
    };
    I'm guessing the reason it doesn't compile is Class2 will not have been declared when the compiler reaches the "MyFunction(Class2 Obj)" line but I really need it to work!!

    Any help would be hugely appreciated.

    dt
    "The most important thing about acting is honesty. If you can fake that you've got it made" - George Burns

  2. #2
    and the hat of int overfl Salem's Avatar
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    Try
    Code:
    class Class2;
    
    class Class1
    {
       public:
          void MyFunction(Class2 obj);
    };
    
    class Class2
    {
       Class1 obj;
    };
    If that doesn't work, then one of them will need to be a pointer to an object.
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.

  3. #3
    Registered User jlou's Avatar
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    Or a reference (e.g. change the function declaration to: void MyFunction(const Class2& obj);)

  4. #4
    Anal comment spacer DominicTrix's Avatar
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    The first one worked, thankyou v much.

    dt
    "The most important thing about acting is honesty. If you can fake that you've got it made" - George Burns

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