Thread: complicated typedef

  1. #1
    Registered User
    Join Date
    Oct 2010

    complicated typedef

    Can someone please help me understand what the following line of code is doing?
    typedef int (*test)(int);

  2. #2
    Registered User
    Join Date
    Sep 2007
    First, figure it out without the typedef:
    int (*test)(int);
    This makes test a pointer to a function (taking one int), and returning an int.

    When you add typedef to it, it means that “test” is now an alias for such a type. So you could do:
    test fun;
    and now fun is a function pointer of the expected type.

    If you don't know how to decode declarations like this, the cdecl program can help you, if it's available for your platform.

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