#include <iostream>
     
    using  namespace  std;
     
    void  f(int x)   // Var x is passed by value
    {
       x = x + 1;
    }
     
    int main(int argc, char *argv[])
    {
       int k = 7;
     
       cout << "before f( ): " << k << endl;    
       f(k);
       cout << "after  f( ): " << k << endl;   
    }