Page 227 - DCAP404 _Object Oriented Programming

Object-oriented Programming

Notes {
}
void employee:: display ( )
{
}
void grade:: getdata ()
{

cout<<“ enter employee’s grade “;
cin> > grd;
cout<< “\n enter the salary “;
cin>> salary;
}
void grade:: display ( )
{

cout<<“ Grade salary \n”;
cout<< grd<<“ “<< salary<< end1;
}
void main ( )
{
employee *ptr;
grade obj;
ptr = &obj;
ptr->getdata ( );

ptr->display ( );
getche();
}
Output
enter employee’s grade A
enter the salary 250000

Grade salary
A 250000
Another format can have a pure virtual function when a virtual function is declared within the
class declaration itself. The virtual function may be equated to zero if it does not have a function
definition. Such functions are also called as do-nothing functions.

Task A Pure Virtual Function is a Virtual function with no body. Explain with an example.

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