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?

Simple program of c++ , Simple program of c++: int main() {    i...

Simple program of c++: int main() {    int   bushels;    float dollars, rate;                 cout                 cin >> dollars;                 cout

Write a program of constructors and destructors, Write a program of constru...

Write a program of constructors and destructors Make a class drugs having encapsulated data for medicine name, whether solid or liquid, price and purpose of use. From this clas

Define the data file in c programming, Define the Data File in C Programmin...

Define the Data File in C Programming? Many applications needs that information can written to or read from an auxiliary memory device. Such information is stock up on the memo

About, How can I learn all programming languages.?

How can I learn all programming languages.?

Create a software application, Project Description: Currently seeking so...

Project Description: Currently seeking someone who can create me a software application (google chrome crx file_ that will auto add all shoe sizes to cart directly and if not av

Read writers problem, Readers Writers with Processes and Threads Write two ...

Readers Writers with Processes and Threads Write two programs implementing ``reader pritority readers-writers synchronization'''' on files. One program will use processes, created

Abstract class Employee , I have to add virtual void calculatePay and virtu...

I have to add virtual void calculatePay and virtual void displayEmployee. How to I implement that in Salaried and Hourly Employee?

What is the significance of external declaration, Problem 1 What is the...

Problem 1 What is the difference between function declaration and function definition? 2 Write a recursive function to find sum of even numbers from 2 to 10. 3 List some

I want youtube down-upload boots, Project Description: Boots capture vid...

Project Description: Boots capture video from your YouTube channel and upload your own video to our channel or the copyright of the videos, bang, 3 parties, automatically delete

Verifone pos offline mod vx670, Verifone pos offline mod vx670 Project D...

Verifone pos offline mod vx670 Project Description: I want a programmer who will build custom application for Offline VX670 to collect and save info+pin 1) Press the am

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