I know what is the purpose of using static variables in an object oriented language, still, I don't understand what is the meaning of using the "static" keyword in C. Can someone explain it to me?
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问题:
回答1:
On a function or global variable, static makes the function or global variable local to that file; other files cannot access that function or global variable by that name (but they can access it if you give a pointer to it away).
On a local variable, it makes it act as if it was a global variable, but is only accessible within that function (unless, again, you give a pointer to it away).
回答2:
The value that a static variable has upon leaving a function is the same value that variable will have the next time the function is called.
A static function can be called only from within the same file that the function appears.
