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?

Command line program to find name matches, What's a six-letter word that ha...

What's a six-letter word that has an e as its first, third, and fifth letter? Can you find an anagram of pine grave. Or how about a word that starts and ends with ant (other than a

Implementation of the stack class in c++, Implementation of the Stack class...

Implementation of the Stack class in C++: How to implement stack class in c++. int Stack::push(int elem) {    if (top    {       list[top++] = elem;       r

Program, write a program for convert numbers upto 9 to alphabet?Eg.now ente...

write a program for convert numbers upto 9 to alphabet?Eg.now enter the inputis 666 means output is "0" lphabet

Palindrome, string S convert it to a palindrome by doing chara, C/C++ Progr...

string S convert it to a palindrome by doing chara, C/C++ Programming

Function declarations and function definitions in cpp, FUNCTIONS It refe...

FUNCTIONS It refers to a subprogram that is meant to do a certain task. It is basically used to execute a set of operations and return information to the main or calling functio

Program for stack over flow vulnerability., Imagine that the server program...

Imagine that the server program is a setuid program owned by the root, then after you penetrate the program with a shell running, you become the ROOT and you can remove the whole f

Notion of encapsulation, The purpose of this assignment is to familiarize y...

The purpose of this assignment is to familiarize you with the notion of encapsulation as well as some aspects of IP and ICMP. Write your programs in C or C++. They will be grade

What does extern "c" int func(int *, A: This will turn o_ "name mangling" f...

A: This will turn o_ "name mangling" for func so that one can connect to code compiled by a C compiler.

What are virtual functions in c++, A virtual function permits derived class...

A virtual function permits derived classes to replace the implementation given by the base class. The compiler makes sure the replacement is always known as whenever the object in

#AREA UNDER CURVE, #question.Write a program to find the area under the cur...

#question.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. The area under a curve between two po

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