When i develop a destructor, do i require to explicitly call, C/C++ Programming

Assignment Help:

When I develop a destructor, do I require to explicitly call the destructors for my member objects?

 

 


Related Discussions:- When i develop a destructor, do i require to explicitly call

Define the float data type of c language, Define the Float Data Type of c L...

Define the Float Data Type of c Language? The float is used to define floating point numbers. The Floating point numbers are stored in 32 bits with 6 digits of precision. Eg

#area under curve, #Write a program to find the area under the curve y = f(...

#Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b.   #include float start_poi

M--commerce, Project Description: We are aiming to prepare an industry f...

Project Description: We are aiming to prepare an industry first in the m-commerce world. M-commerce payment processing programmers required Skills required are C Programmi

What is the use of pear in php, What is the use of PEAR in php? PEAR is...

What is the use of PEAR in php? PEAR is termed as PHP Extension and Application Repository. It provides structured library to PHP users and also gives provision for package mai

Program to convert compass heading in degrees , Convert compass heading in ...

Convert compass heading in degrees (0-360 degrees)to compass bearing. A compass bearing consist of three items namely: a.The direction you face (North or South) b.An angle betwe

Explain in brief about the one-definition rule, Explain one-definition rule...

Explain one-definition rule (ODR). According to one-definition rule, C++ constructs should be identically defined in each compilation unit they are used in. As per ODR, two

Program''s, why is programming is needed now-a-days.what is the benefit of ...

why is programming is needed now-a-days.what is the benefit of colleges to apply heavy loads on students head.

3/15/2013 5:38:38 AM

A: No. You never have to explicitly call a destructor (except with placement new).

A class''s destructor (whether or not you explicitly describe one) automatically invokes the destructors for member objects. They are destroyed in reverse order they show in the declaration for the class.

class Member {               

public:

~Member();

...

};

class Fred {

public:

~Fred();

... private: Member x_; Member y_; Member z_;

};

Fred::~Fred()

{

// Compiler automagically calls z_.~Member()

// Compiler automagically calls y_.~Member()

// Compiler automagically calls x_.~Member()

}

 

3/15/2013 5:39:30 AM

A: No. You never require to explicitly call a destructor (except with placement new).

A derived class''s destructor (whether or not you explicitly define one) automagically invokes the destructors for base class sub objects. Base classes are destructed after member objects. In the event of multiple inheritances, direct base classes are destructed in the reverse order of their appearance in the inheritance list.

class Member {

public:

~Member();

...

};

class Base {

public:

virtual ~Base(); // A virtual destructor

...

};

class Derived : public Base {

public:

~Derived();

... private: Member x_;

};

Derived::~Derived()

{

// Compiler automagically calls x_.~Member()

// Compiler automagically calls Base::~Base()

}

Note: Order dependencies along with virtual inheritance are trickier. If you are relying onto order dependencies within a virtual inheritance hierarchy, you''ll require many more information than is in this

 

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd