How to change local static variable value from outside function

Question

#include 

void func() {
   static int x = 0;  // x is initialized only once across three calls of
                      //     func()
   printf(\"%d\\n\"         


        

Answer 1

You can't. It's a local static variable which is invisible outside func().

You can either use:

1. Global static (not recommended generally).
2. Pass it through reference/pointer parameter, or return by reference.