// Return by Reference:
// So far all the function calls were used on the right side of the = sign
// Can we use a function on the left side of the equal sign?
#include <iostream.h>
int x; // global variable
int& setx()
{  return x;
}
void main()
{
   setx() = 789;
   cout << "x = " << x << endl;
   cout << setx();
}