Writing a deep copy - copying pointer value

Question

In writing a copy constructor for a class that holds a pointer to dynamically allocated memory, I have a question.

How can I specify that I want the value of the pointer

Answer 1

You allocate new object

class Foo
{
    Foo(const Foo& other)
    {
        // deep copy
        p = new int(*other.p); 

        // shallow copy (they both point to same object)
        p = other.p;
    }

    private:
        int* p;
};