How do I deallocate memory using delete in C++?

Asked by Last Modified  

Follow 3
Answer

Please enter your answer

Experienced Computer trainer having worked in IT sector for 20 years.

we have allocated the memory dynamically for the float array using new . We enter data into the array (and later print them) using pointer notation. After we no longer need the array, we deallocate the array memory using the code delete ptr; .
Comments

!!! Special Math's classes !!!

In C++ when we want to allocate memory from the free-store (or we may call it heap) we use the new operator. int *ptr = new int; and to deallocate we use the delete operator
Comments

Certainly! As an experienced tutor specializing in C++ Language Training and registered on UrbanPro.com, I'll guide you on deallocating memory using the delete operator in C++, emphasizing the effectiveness of my C++ Language Training online coaching. In C++, dynamic memory allocation is done using operators...
read more
Certainly! As an experienced tutor specializing in C++ Language Training and registered on UrbanPro.com, I'll guide you on deallocating memory using the delete operator in C++, emphasizing the effectiveness of my C++ Language Training online coaching. In C++, dynamic memory allocation is done using operators like new, and it's essential to deallocate this memory when it's no longer needed to prevent memory leaks. The delete operator is used for this purpose. Here's a brief explanation and example: cpp #include <iostream> int main() { // Dynamically allocate memory for an integer int* dynamicInt = new int; // Assign a value to the dynamically allocated memory *dynamicInt = 10; // Output the value before deallocating std::cout << "Value before deallocation: " << *dynamicInt << std::endl; // Deallocate the memory using the delete operator delete dynamicInt; // Note: It's a good practice to set the pointer to nullptr after deletion dynamicInt = nullptr; // Attempting to access the value after deallocation may lead to undefined behavior // std::cout << "Value after deallocation: " << *dynamicInt << std::endl; return 0; } In this example, memory is dynamically allocated for an integer using new, and the delete operator is used to deallocate the memory when it's no longer needed. After using delete, it's a good practice to set the pointer to nullptr to avoid any accidental use of the memory. For in-depth understanding and personalized guidance on memory management and other C++ concepts, consider enrolling in my C++ Language Training online coaching sessions through UrbanPro.com. UrbanPro is a trusted platform connecting students with experienced tutors and coaching institutes, offering the best online coaching for C++ Language Training. Unlock the full potential of C++ with my coaching sessions on UrbanPro.com, where effective and tailored learning experiences await you. Let's navigate the intricacies of C++ together! read less
Comments

View 1 more Answers

Related Questions

What is difference between object oriented procedure and object oriented programming?
Pop is not given importance to data but to functions where as oop given to data rather than procedures or functions. More important point you have to know is pop is less secure for hiding data but oop provides more security.
Profile Photo
Madhuranjan
What is meaning of C++?
c++ is a programming language working on Object Oriented concept. Its a mediator by which human can make and run software which is understandable for computers as other language also do.
Profile Photo
Moinuddin
what is copy constructor?
The copy constructor is a constructor which creates an object by initializing it with an object of the same class, which has been created previously. The copy constructor is used to: Initialize one object...
Profile Photo
Hiteshwar
how to use dos.h
Its simple aman just go through this link with examples explains are there .. Still have any doubt u can ask here.. http://www.programmingsimplified.com/c/dos.h
Profile Photo
Aman
what is constructor ?
Constructor is a special method which invoke automatically as instance created.
Profile Photo
Avnish

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

Predict the Output of C Questions based on Recursion and Macro
#include<stdio.h>void k(unsigned int i,unsigned int j){ static char x="0123456789ABCDEF"; if(i>=j) k(i/j,j); putchar(x);}void main(){ k(20,12);} ___________________________________________ ...
Profile Photo

C++ Program Sample Application
//Standard Library Functions(Headers Files Used in C++) #include<iostream.h> #include<conio.h> //Main function int main() { //function for clearing the screen clrscr(); //function for...
Profile Photo

How are C And C++ Different Form Each Other
1.C and C++ both have data types operator and conditional looping control statements. But the difference is that C++ has to object-oriented concepts which C programs do not have. Hence C program is like...
Profile Photo

Advantages of C++ Language
Advantages of C++ - C++ is a profoundly convenient dialect and is frequently the dialect of decision for multi-gadget, multi-stage application advancement. - C++ is a protest situated programming dialect...
Profile Photo

Interview Questions
(1) What is the output of below program: For(char i = 0; i<256; i++)Printf(“%d\n”,i); Modify above program so that it can prints number from 0 to 255. (2) Consider on following declaration: (i)...
Profile Photo

Recommended Articles

Introduction C++ is an excellent programming language and many of the applications are written in C++ language. It has generic, object-oriented & imperative programming features, and also provides facilities for low-level memory manipulation. Successor of C language, it is an OOP (object oriented programming) language...

Read full article >

Software Development has been one of the most popular career trends since years. The reason behind this is the fact that software are being used almost everywhere today.  In all of our lives, from the morning’s alarm clock to the coffee maker, car, mobile phone, computer, ATM and in almost everything we use in our daily...

Read full article >

Whether it was the Internet Era of 90s or the Big Data Era of today, Information Technology (IT) has given birth to several lucrative career options for many. Though there will not be a “significant" increase in demand for IT professionals in 2014 as compared to 2013, a “steady” demand for IT professionals is rest assured...

Read full article >

Business Process outsourcing (BPO) services can be considered as a kind of outsourcing which involves subletting of specific functions associated with any business to a third party service provider. BPO is usually administered as a cost-saving procedure for functions which an organization needs but does not rely upon to...

Read full article >

Looking for C++ Language Classes?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you