how to over come the issue of object slicing in c++ [closed]

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How should I get rid of the problem with object slicing in c++.

In my application if the der开发者_如何学Goived class has some dynamically allocated pointer and derived class object is assigned to base class object, the behavior is memory corruption!

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It depends on your design. You may have to change certain design criteria to get rid of it. One of the options is to have an overloaded operator = and copy constructor in your base class for particular derived class.

class Derived;
class Base
{
//...
private:
  Base (const Derived&);
  Base& operator = (const Derived&);  // private and unimplemented
};

Now if you attempt to do something like following:

Derived d;
Base b;
b = d; // compiler error

it will result in compiler error.

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you can't. you should solve the problem with the pointer. if you want to assign Obj2 to Obj1, override assign operator (operator=)