How to avoid globals in C?

Question

as a newbie, I read everywhere to avoid overuse of global variables. Well, how to do it? My low skill doesn't work. I'm finishing the transfer of a ton of structures, and it's harder to read than using global variables. Argh is my code a mess any good book / article recommendations that are guided by this problem / structure structure of the application?

Answer 1

Depending on what your variables do, a global scope may be a better scope. (Think that flags signal an interrupt and should be processed at a convenient time in the middle of the calculation cycle.)

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Answer 2

Yourdon Constantine. ( !), , .

Answer 3

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Answer 4

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#define current_filename   context->current_filename
#define option_flags       context->option_flags

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Answer 5

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• ex. (sInverterState, sButtonsState, sInverterParameters ..).
• If I write a UI menu, I can use static variables in the C file and do not care about passing structures when I have only 1 LCD. I do not want it to look like GTK ++.
• Writing a re-code is not yet for me and its overdoing for this purpose.
• Get the right IT education.

I can end up with a lot of globals, but at least they are well-packaged and readable.