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Please tell me the oops concept with detailed answer
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Answer Posted / mahesh_b.tech@2008
There are mainly 4 object oriented principals.
1)ABSTAACTION:process of providing necessary properties &
operations of an object.
2)ENCAPSULATION:process of providing all the properties
&operations of entity in one place.
properties...>variables
operations...>methods
place ...>class
3)INHERITANCE:process of writing a new class(derived
class,sub class,chiled class) by using the functionality of
existing class(super class,base class,parent class)
4)POLYMORPHISM:one form behaving differently in different
situations.
ex:tv remote button,same button used to make the tv on &
off.
| Is This Answer Correct ? | 8 Yes | 3 No |
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Can we override main method?
String = "C++ is an object oriented programming language.An imp feature of oops is classes and objects".Write a pgm to count the repeated words from this scenario?
class CTest { public: void someMethod() { int nCount = 0; cout << "This is some method --> " << nCount; } }; int main() { CTest *pctest; pctest->someMethod(); return 0; } It will executes the someMethod() and displays the value too. how is it possible with our creating memory for the class . i think iam not creating object for the class. Thanks in Advance... Prakash
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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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