Argument passing by reference to pointer problem

Question

Every time I try to compile my code I get error:

cannot convert parameter 1 from \'int *\' to \'int *&\'

The test code looks like this:

Answer 1

&myval is an rvalue (of type int*), because it's a temporary. It's a pointer, but you cannot modify it, because it's just created on the fly. Your function set however requires a non-const reference, so you cannot pass it a temporary.

By contrast, pMyVal is a named variable, thus an lvalue, so it can be passed as a non-constant reference.