/**

global-variable-scope.c - global variable and their scopes explained 
   
Copyright (C) 2023-2024 Mert Gör and contributors

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>.

Feel free to send an email to mertgor@masscollabs.xyz for your questions

 **/

#include <stdio.h>

int a;

void foo(){
  a = 10;
}

int main(){
  a = 30;
  printf("%d\n", a); /* a is 30*/
  foo();
  printf("%d\n", a); /* a is 10*/

  return 0;
}