Scope of a variable outside main in C

Question

Consider the code:

#include 

int x;

int main (void) 
{ }

The value of x is 0 inside main

Answer 1

It's not static. It's global. You can declare it extern in a different compilation unit, but space will be allocated for it in this one. Globals are always initialized to 0 if they aren't given initializers, by the way.