what is function overriding

class A
{
public:
A();

virtual int functionA( int val )
{
return val + val; /* some statement */
}
};


class B : public Class A
{
public :
B();

virtual void functionA( int val )
{
return val - val; /* some statement */
}
}

what is function overiding

pls send concept of function overriding

u r aware of function overloading na in which same function is overloaded wid a number of parameters....in function overridin same number of arguments a sent....of same datatype...

now function overriding is a method of hiding some members. for a derived class if a function of the same name as that of a function in its parent class is given, the method is said to be overriden. In this case you have to declare the functions as VIRTUAL.