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What are the OOPS concepts?
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Answer Posted / manoj kumar verma
OOps or Object Oriented Programming is the technique to
create program based on the real world.
OOPs based language to findout the object and manipulate
and their relation between each other. OOPa offer greather
flexibility and comptibility and is populor in developing
large application.
OOPs define the various properties such as..
1. Class -:
In class Define the all the Data members and
methods.
2. Objects -:
object is the Instance of class.
3. Methods -:
We know that a class can define both
attributes and behaviour.Attrbutes are define by varibles
and behavior are define by methods.
4. Abstraction -:
only show the essential details and do
not show the non - essential details.
5. Encapsulation -:
Means, hiding of the data members or
packing the data members and methods.
6. Inheritance -:
Reuseability of the code by making a
derived class. for e.g. father -> chield
A class is made looking at which the new derived class is
made with modification or addition in the derived class
7. Polymorphism -:
When one objects show the various
forms then it is known as polymorphism. for e.g.
One mobile key type the some character and one digits.
8. Message Passing -:
we can pass the one object to
another.
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Question In a class, there is a reference or pointer of an object of another class embedded, and the memory is either allocated or assigned to the new object created for this class. In the constructor, parameters are passed to initialize the data members and the embedded object reference to get inialized. What measures or design change should be advised for proper destruction and avioding memory leaks, getting pointers dangling for the embedded object memory allocation? Please suggest. Question Submitted By :: Sunil Kumar I also faced this Question!! Rank Answer Posted By Re: In a class, there is a reference or pointer of an object of another class embedded, and the memory is either allocated or assigned to the new object created for this class. In the constructor, parameters are passed to initialize the data members and the embedded object reference to get inialized. What measures or design change should be advised for proper destruction and avioding memory leaks, getting pointers dangling for the embedded object memory allocation? Please suggest. Answer # 1 use copy constructors 0 Shanthila There is something to be taken care in destructor, in copy constructor, suppose the memory is assigned to the embedded member object pointer with the parameter passed value, but if some other objects of different class also are pointing to this memory, then if some one deletes the object then this class member pointer object will become dangling, or if the object is not deleted properly then there will be memory leak. Please suggest the design change required to handle or avoid this situation
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