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?

Data structyres, What data structure would you mostly likely see in a nonre...

What data structure would you mostly likely see in a nonrecursive implementation of a recursive algorithm?Minimum 100 words accepted#

Develop a windows application to show computer hardware, - But with less fe...

- But with less features and more user-friendly (particularly for non-tech savvy users). - Software needed having a left menu with links (no pictures required) for every hardwar

COMPUTER, THEORY OF A COMPUTER PROGRAMMING

THEORY OF A COMPUTER PROGRAMMING

Define polymorphism?, Define Polymorphism? A: Polymorphism let a client ...

Define Polymorphism? A: Polymorphism let a client to treat distinct objects in the similar way even if they were developed from distinct classes and exhibit different behaviors.

Define and explain flow chart with an example, C Programming and Data Struc...

C Programming and Data Structures 1. Define and explain flow chart with an example. 2. Write an algorithm to print all even numbers in descending order and draw the flowcha

Simple text editor using c programming in linux environment, Deliverables: ...

Deliverables: you are required to upload your c code in the assignment dropbox set in Moodle. You are supposed to work with Linux gcc compiler and pico editor for compiling via the

CGI, WHAT IS CGI?

WHAT IS CGI?

#title.faculty attendance system, how to create database of faculty databas...

how to create database of faculty database......... send me with program

How can we simulate the concept of multiple inheritance, Problem: (a) U...

Problem: (a) Using a class hierarchy of your own choosing, with at least TWO subclass levels, show (i) the use of abstract and concrete forms of Java class and method in you

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