static structure member

You don't. C structs are not classes as they are in C++. You can make an entire struct static/global but not just one of its members.

The C way to do it would be:



Then whatever functions operate on MyStruct do their work on the global MyStructCommonVar as a C++ struct would have done on it's static member.

-me

Thanks for the help.
That´s ugly. From a function, I can´t return a string, for example, or any kind of pointer to data, that is member of a structure. It would point to garbage.

In C, instead of returning such a pointer, the idiom is to take a pointer to caller allocated space as a parameter. You then write whatever data into that space. You can return strings by mallocing the appropriate buffer (but the caller must take care to free it), or using the above technique - in which case care must be taken to handle the string length.

Yes, I might add the idiom rip-off mentions is preferable *because* it allows stack allocation (efficient and avoids need of corresponding destroy call in many cases). OTOH it doesn't work for situations where caller doesn't know size of memory required and there isn't any point to try estimating a buffer with a max size.

Either way the code is going to be a lot more verbose than in many other languages.