bvpraveen  +  104992 Thu, 02 Jun 05 03:54 PM Dear Praveen, Pure virtual functions are used to create Abstract classes - class in which objects can't be created and act as only a 'prototype', which is used as a base class. Another main use of PVF is to 'force' the derived class to define its own function definition. The pure virtual function can have statements too!, in which case the derived class can call the base class' function with the use of scope resolution (::). Eg: The base class Shape contains all the 'basic function' with some common code. The derived classes - rectange - can overload to define its own funtion. class shape { virtual void print(void) =0 // =0 means it is a pure virtual function { cout } }; class rectange : public shape { float length,breadth; rectangle() { length=10; breadth=20; } void print(void) { shape::print(); cout cout } }; void main(void) { shape s; // Error rectange r; // Fine! r.print(); } OUTPUT: Base class Derived class 10 20 bvpraveen Joined on Sat, Mar 5 2005 Coimbatore, India Regular Member 507 Please feel free to correct my grammatical mistakes.

	hemantchavan  +  122594 Sat, 30 Jul 05 10:24 AM This link could be of some help - there are many other links to C++ programming www.planet-source-code.com   hemantchavan Joined on Thu, Mar 10 2005 New Member 28

	rishonly  +  177875 Mon, 02 Jan 06 06:55 AM Hello, I would suggest to first learn the major OOP concepts,  like  Inheritance, Polimorphism and others. rishonly Joined on Sat, Mar 5 2005 KUMBAKONAM,INDIA Contributing Member 1,782 Regards, Krishna

	Ivantalk  +  184864 Tue, 17 Jan 06 05:35 PM Which kind of C++ do you like to learn? According to my experience, there're 3 kind of C language: Borland C, VC,Turbo C. And I believe it firmly that there's not only one kind of C++. Different developmet environments make the different syntax and standards Ivantalk Joined on Tue, Jan 17 2006 QuanZhou, Fujian Province, China New Member 33 Have your heard of HuaQiao University? I can tell you that it's my university.