SOURCE FILE: scope07.cpp

#include <iostream>
using namespace std ;

void my_test_function(void) ;

// global variable
// usually a very bad idea
int my_test_number = 0 ;  

int main ()
{
  cout << my_test_number << endl ;
  my_test_function() ;
  cout << my_test_number << endl ;
  return 0 ;
}

void my_test_function(void)
{
  my_test_number = 1;
  cout << my_test_number << endl;
}