You implement inheritance by deriving a new class of object from an existing class of object. The existing class is known as the base class of the derived class.
Classes declared final cannot be used as bases classes and classes without a virtual destructor (or a virtual destructor override) cannot be used as polymorphic base classes.
Yes, you are right, you can use multiple inheritance in c plus plus and not in Java. What is the question?
C++ allows multiple inheritance while Java does not. In my opinion, multiple inheritance is not useful because it can get very confusing very quick. For polymorphism, C++ does early binding by default, while Java does late binding by default. Late binding is more useful than early binding.
struct employee { }; struct supervisor : employee { // single inheritance -- a supervisor inherits all the public and protected properties of an employee. }; struct manager : supervisor { // multilevel inheritance -- a manager inherits all the public and protected properties of a supervisor (and therefore an employee). };
Don't write, it is already written, google for 'cpp'.
The main features of OOP are the same regardless of the language. They are: encapsulation; data hiding; inheritance; and polymorphism.
C is not an object oriented language and therefore has no native support for inheritance.
Java does not support direct multiple Inheritance. Harder to implement, not every language support it: C++ does, Java does not.
Yes.
C++ allows multiple inheritance while Java does not. In my opinion, multiple inheritance is not useful because it can get very confusing very quick. For polymorphism, C++ does early binding by default, while Java does late binding by default. Late binding is more useful than early binding.
struct employee { }; struct supervisor : employee { // single inheritance -- a supervisor inherits all the public and protected properties of an employee. }; struct manager : supervisor { // multilevel inheritance -- a manager inherits all the public and protected properties of a supervisor (and therefore an employee). };
struct A {}; // base class struct B : A {} // derived class (single inheritance).
It cannot. Inheritance is a compile-time operation. Constructors are invoked at runtime at the point of instantiation.
See related links for an example.
struct base1 { // ... }; struct base2 { // ... }; struct derived1 : public base1 // single inheritance { // ... }; struct derived2 : public base1, public base2 // multiple inheritance { // ... };
There are two stream operators: << (insert or put) and >> (extract or get). Output streams implement the insertion operator, input streams implement the extraction operator and input/output streams implement both operators.
Don't write, it is already written, google for 'cpp'.
The concepts of OOP in C++ are the same as for OOP in any other programming language: abstraction, encapsulation, inheritance and polymorphism.
The main features of OOP are the same regardless of the language. They are: encapsulation; data hiding; inheritance; and polymorphism.