Define auto pointer?, C/C++ Programming

Assignment Help:

A: The simplest instance of a smart pointer is auto_ptr that is included in the standard C++ library. Auto Pointer only takes care of Memory leak & does nothing regarding dangling pointers issue. You can determine it in the header . Here is part of auto_ptr's implementation, to illustrate what it does:

template class auto_ptr

{

T* ptr;

public:

explicit auto_ptr(T* p = 0) : ptr(p) {}

~auto_ptr() {delete ptr;}

T& operator*() {return *ptr;} T* operator->() {return ptr;}

// ...

};

As you can illustrate, auto_ptr is a simple wrapper around a regular pointer. It forwards all significant operations to this pointer (dereferencing & indirection). Its elegance within the destructor: the destructor takes care of deleting the pointer.

For the user of auto_ptr, it means that rather then writing:

void foo()

{

MyClass* p(new MyClass);

p->DoSomething();

delete p;

}

You can write down following:

void foo()

{

auto_ptr p(new MyClass);

p->DoSomething();

}

And trust p to clean up after itself.

 


Related Discussions:- Define auto pointer?

Define array of objects, Array of Objects A class is a template, which ...

Array of Objects A class is a template, which can contain data items as well as member functions to operate on the data items. Various objects of the class can also be declared

Write a program that allows two players to play connect four, You may work ...

You may work in pairs for this assignment. Submit only one project per team; both partners will receive the same grade. Also, you can earn up to 40 points (out of 25) on this assig

I want skype recorder application, I want Skype Recorder Application + Setu...

I want Skype Recorder Application + Setup + Sourcecode + NICE UI Project Description: i want an application built which will allow user to record skype audio or video calls

Board coloring, in this problem u given a board in which some of the eleme...

in this problem u given a board in which some of the elements are placed as shown in diagram below .each element represent a color .fill the other elements in the board such that n

Reverse digit function, how can i write reverse digit function like writing...

how can i write reverse digit function like writing 1234 and printing 4321

CptS 121 Program Development & Design program design in C, Write a program...

Write a program that performs character processing on 10 characters read in from a file, and writes the results to output files. Do NOT use loops or arrays to solve this problem. N

Coding, padovan series with words

padovan series with words

Explain public and private members, Public, Private and Protected members: ...

Public, Private and Protected members: Class members can either be declared in public','protected' or in the 'private' sections of the class. But as one of the features of OOP i

Advance in c, create a program to populate the first array then the odd num...

create a program to populate the first array then the odd number is the second array and get the sum of the second array.

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