On the program that belongs to the accompanying slide the parameter of the function f is passed by C++ reference.
Now assume that the parameter is passed by value:
int f(A x){ A y = x, *z = &x, &w = x; cout << y.op() << endl; cout << z->op() << endl; cout << w.op() << endl; }
What will be the output of the 3 output statements at the bottom of f. Please predict the result before you run the program.