#include <iostream>
using namespace std ;

//Using references to let a function be a l value
//--------------------------------------------------------------------

int global1 ;
int& func1( )
{
  return global1 ;
}

//--------------------------------------------------------------------

int main()
{
    global1 = 100 ;
    func1()    = 200 ;
    cout << global1 << endl ;

    return(0)  ;
}