Answer Posted / gp

Class which cannot be initiated is an abstract class.
You can make a class abstract by declaring a pure virtual method inside the class. For example:

class base
{
void func()=0;
};

void main()
{
base b;
}

Now you cannot instantiate base class.
The class which inherits this base class will also become abstract unless you define a body of the func() method in inherited class.

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