Can local variables and functions have the same names in C?

Question

Suppose I have a single .c file in which I have a local variable a. Can I also have a function in that c file which has t

Answer 1

Just for completion's sake, there is actually a way to refer to global identifiers, even if they are shadowed in C.

In kuroi neko's snippet, that would look like this:

void a (void)
{
    // whatever
}

{
    int a;

    a++; // no problem, boss
    {
         extern void a(void);
         a(); // no problem either
    }
}

I wouldn't do that though. Use proper names instead.