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Topic :: Destructor





Destructor Interview Questions
Questions Answers Views Company eMail

What is a virtual destructor?

2 1987

What are destructive statements in SQL?

1 1227

What is the order of calling for the constructors and destructors in case of objects of inherited classes?

856

What is destructive testing, and what are its benefits?

1189

Which kind of volcano is the most destructive?

888

What is the difference between a destructor and a garbage collector?

1015

Should I make my destructor virtual?

1049

Can you explicitly call a destructor?

930

Can a struct have a default constructor (a constructor without parameters) or a destructor in c#?

984

Can structs in c# have destructors?

970

Are c# destructors the same as c++ destructors?

1126

If c# destructors are so different to c++ destructors, why did ms use the same syntax?

924

When do we generally use destructors to release resources?

938

How do destructors and garbage collection work in c#?

933

Why is it not a good idea to use empty destructors?

1042




Related Topics


Un-Answered Questions { Destructor }

Does .net supports destructors concept?

2072


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

2131


what are constructors and destructors?

2155


what mean void creat_object?in public class in this code class A{ public: int x; A(){ cout << endl<< "Constructor A";} ~A(){ cout << endl<< "Destructor A, x is\t"<< x;} }; void create_object(); void main() { A a; a.x=10; { A c; c.x=20; } create_object(); } void create_object() { A b; b.x=30; }

2595


Always declare destructors to be virtual"?????? why this is so needed?????

2141


Why is it so that we can have virtual constructors but we cannot have virtual destructors?

4947


what is the difference between C and C++? what is the difference between scanf and gets? what is mean by extern what is the use of it? what will happen if i say delete this> Difference between C structure and C++ structure? What is the difference between overloading and overridding? Explain the need for "virtual Destructor" Can we have "virtual Constructors"? What is the different types of polymorphism> What is virtual functions? How to implement virtual function in "C"? What are the different types of storage classes?

2170


There are two base class B1,B2 and there is one class D which is derived from both classes, Explain the flow of calling constructors and destructors when an object of derived class is instantiated.

1997


Why are the destructors for base class and derived class called in reverse order when the program exits

2207


Destructors CANNOT be implemented in which one of the following?

5876


write a C++ program for booking using constructor and destructor.

2543


What happens if an exception is throws from an object's destructor?

1048


what is a destructor?

988


What are virtual destructors?

971


What is the purpose of a constructor? Destructor?

1138