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C++ topics..

Hello Experts,

I want to know the following things in C++..
1) What is encapsulation?
2) what is abstraction?
3) what is aggregation?
4) what exactly is the use of abstract class in C++ and also with virtual functions?

I apprecitate if some one can explain with a good example..
5)

ASKER CERTIFIED SOLUTION

Infinity08

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Infinity08

>> See the answer to 3).

Should have been "See the answer to 2)." of course :)

I also forgot an example for 4) - Her it is (using the same classes as in 2) ) :

std::vector<Car*> carpark;
carpark.push_back(new Volkswagen());
carpark.push_back(new Renault());

// the car park now contains a Volkswagen and a Renault

// we can drive both without knowing the type :
carpark[0].drive();
carpark[1].drive();

Both cars in the car park will now drive in their own specific way (according to the implementations for a Volkswagen and a Renault respectively).

SOLUTION

kaylanreilor

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Infinity08

Can I ask you why you gave a B grade ? That usually means that the answer given was not sufficient (didn't address your question completely).

If there are still questions left, you can always ask for clarification - you do not need to accept a reply as long as the question hasn't been answered yet.

kaylanreilor

Have a look to the time stamp of the posts.

Infinity08

What does a B grade have to do with timestamps ?