/* -------------------------------------------------
   Show parameter passing mechanism in C++

         pass-by-value		(no &)
         pass-by-reference	(with &)
   ------------------------------------------------- */

#include <iostream>

using  namespace  std;

void  f(int & a)				// Pass by value
{
   cout << "Before - Inside f( ): a = " << a << endl;
   a = a + 1;
   cout << "After  - Inside f( ): a = " << a << endl;
}

int main(int argc, char *argv[])
{
   int k = 7;

   cout << "before f( ): " << k << endl;

   f(k);

   cout << "after  f( ): " << k << endl;
}