Answer / venu gopal

The method can be over-ridden.

Answer / kiran

Even though the function in base class is declared with
virtual keyword, it is not compulsory that the derived
class must override it.
namespace TestNewOverride
{
class MyBaseClass
{
int a;
public virtual int doubleit()
{
return 2 * a;
}
public MyBaseClass()
{
a = 5;
}
}

class MyDerivedClass:MyBaseClass
{
public static void Main()
{

}
}
}

Answer / praseetha sandeep

when you have a method defined in a class which you want
to allow to be implimented by inherited class you can use
virtual function

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