What are the OOPS concepts?
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Answer Posted / sirisha
oops concepts are
1.Object
An object is collection of data members and associated
member functions.
2.Class
Class is a data structure which encapsulates data and
member function in a single unit and the member funtions of
the class are used to access member variables.
3.Abstraction
Abstraction is of the process of hidding data.
or
Identifying the important properties of existing modes.
4.Encapsulation
The wrapping up of data and methods in a single unit is
known as encapsulation.
5.Polymorphism
Process of aquiring properties from one object to another
with changes.
or
The same operation can be applied differntly in diffent
objects.
ex:5+2,a+b.
6.Inheritance
Process of aquiring properties from one object to another
without changes.
or
Identifying the important features based on one class to
next class.
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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
