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Is there any chance that a function defined with static can be accessed outside the file scope?
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Functions in C are global by default. To make them local to the file they are created, we use the keyword static before the function. Static functions can't be called from any other file except the file in which it is created. Using static function, we can reuse the same function name in different files.
A static member function can access only the names of static members, enumerators, and nested types of the class in which it is declared. Suppose a static member function f() is a member of class X . The static member function f() cannot access the nonstatic members X or the nonstatic members of a base class of X .
Static method overloaded and static method can access only static members.
To call a static method from a child class, use the parent keyword inside the child class. Here, the static method can be public or protected .
It depends upon what you mean by "access". Of course, the function cannot be called by name in any other file since it's static in a different file, but you have have a function pointer to it.
$ cat f1.c
/* static */
static int number(void)
{
return 42;
}
/* "global" pointer */
int (*pf)(void);
void initialize(void)
{
pf = number;
}
$ cat f2.c
#include <stdio.h>
extern int (*pf)(void);
extern void initialize(void);
int main(void)
{
initialize();
printf("%d\n", pf());
return 0;
}
$ gcc -ansi -pedantic -W -Wall f1.c f2.c
$ ./a.out
42
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