How do I cast a parent class as the child class

Question

It\'s been a while since I have had to write C++ code and I\'m feeling kind of stupid. I\'ve written code that is similar to, but is not exactly, the code b

Answer 1

You can cast using Single Argument Constructor: i.e. (A parent works, A child Studies) as follows:

#include 
using std::cout;

class Parent
{
    public:
    void goToWork()
    {
        cout<<"working\n";  // only parents work
    }
};

class Child : public Parent
{
    public:
    Child(const Parent& parentAddr){}
    void goToSchool()
    {
        cout<<"studying\n";   // only children studies
    }
};

int main(void)
{
    Child child(*(new Parent()));

    // here's a child working
    child.goToWork();
    return 0;
}

you pass an child class address as parent's constructor parameter and you can use a child obj to do parent's stuff