Types in a struct in C

Question

In this article : http://publib.boulder.ibm.com/infocenter/macxhelp/v6v81/index.jsp?topic=/com.ibm.vacpp6m.doc/language/ref/clrc03defst.htm

What's means the sentence "In C, a structure member may be of any type except "function returning T" (for some type T)"

Thanks for all the answers!

score 5 · Accepted Answer · answered May 28 '10 at 20:28

5

In C there are no member functions - you can have pointers to functions as members, but you can't declare or define functions in structures:

struct X {
    int f(); // illegal in C
    int g() { return 42; } // same here
    int (*h)(); // pointer to function, fine
};

answered May 28 '10 at 20:28

Georg Fritzsche

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+1, Being able to put a function pointer into a structure makes this limitation not really a limitation at all. – Carl Norum May 28 '10 at 20:30
@drigo: I don't quite understand, what are you asking? – Georg Fritzsche Jun 11 '10 at 22:15

score 0 · Answer 2 · edited May 23 '17 at 12:01

0

In the same vein - creating containers for functions - have a look at trampolines * (nested functions is another name). I am NOT endorsing nested functions...

What is a trampoline function?

edited May 23 '17 at 12:01

Community

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answered May 28 '10 at 21:26

jim mcnamara

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Types in a struct in C

2 Answers2