scope - How can I access a shadowed global variable in C?

Question

How can I access a shadowed global variable in C? In C++ I can use :: for the global namespace.

Answer 1

If your file-scope variable is not static, then you can use a declaration that uses extern in a nested scope:

int c;

int main() {
    {
        int c = 0;
        // now, c shadows ::c. just re-declare ::c in a 
        // nested scope:
        {
            extern int c;
            c = 1;
        }
        // outputs 0
        printf("%d
", c);
    }
    // outputs 1
    printf("%d
", c);
    return 0;
}

If the variable is declared with static, i don't see a way to refer to it.