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Topic :: Destructor





Destructor Interview Questions
Questions Answers Views Company eMail

What is a virtual destructor?

2 2102

What are destructive statements in SQL?

1 1299

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

895

What is destructive testing, and what are its benefits?

1247

Which kind of volcano is the most destructive?

961

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

1077

Should I make my destructor virtual?

1105

Can you explicitly call a destructor?

995

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

1029

Can structs in c# have destructors?

1037

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

1235

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

981

When do we generally use destructors to release resources?

989

How do destructors and garbage collection work in c#?

987

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

1101




Related Topics


Un-Answered Questions { Destructor }

Does .net supports destructors concept?

2119


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

2185


what are constructors and destructors?

2202


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; }

2677


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

2220


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

5065


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?

2226


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.

2056


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

2286


Destructors CANNOT be implemented in which one of the following?

5944


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

2595


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

1100


what is a destructor?

1051


What are virtual destructors?

1027


What is the purpose of a constructor? Destructor?

1202