In C++, macro usage before semicolon in function declaration -

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can please explain me following code:

    #ifndef some_def         #define some_def     #endif      class base_class{             public:         base_class() some_def;          ~base_class() some_def;          bool init(int arg1, int arg2) some_def;      };

i not able understand usage of macro after every function.

regards, navnish

in case, nothing, unless some_def defined somewhere else, example:

#define some_def { cout << "default definition" << endl; }

if some_def defined that, every function in class includes some_def have body.


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