UrbanPro
Login Ask & Answer Success Stories Paid Courses Free Classes Tuition & Classes Fees Write a Review All Categories Help Center
Post your Learning Need Signup as a Tutor
✕

Popular Cities

Bangalore

Hyderabad

Delhi

Mumbai

Chennai

Pune

Kolkata

Gurgaon

Ahmedabad

Jaipur

Noida

✕

Learn C Language from the Best Tutors

  • Affordable fees
  • 1-1 or Group class
  • Flexible Timings
  • Verified Tutors

Book a Free Demo

C Language > Learn C Language > How would you explain C++'s rule of 0, rule of 3, and...
✕

Search in

How would you explain C++'s rule of 0, rule of 3, and rule of 5 in your own words?

Asked by Last Modified  

1 Answer

Learn C Language +3 C Language Programming Advanced C++ Basic C++

Follow 5
Answer

Please enter your answer

Electrical Engineer from IIT Kanpur ,By profession Software Engineer and Teacher by passion

These rules are instrumental when you design your class. When you create/write a new class, you always think of 5 place holder methods in it. Earlier it was three, but after C++ 11 it became 5. They are: Constructor Copy Constructor Assignment operator; After C++11 - Move Copy constructor Move Assignment...
read more
These rules are instrumental when you design your class. When you create/write a new class, you always think of 5 place holder methods in it. Earlier it was three, but after C++ 11 it became 5. They are: Constructor Copy Constructor Assignment operator; After C++11 - Move Copy constructor Move Assignment operator. Rule of 0 means, your class is designed in a way, such that you don't need any of 1,2,3,4,5 Rule of 3 means, you need 1,2,3 Rule 3 of 5 means, you need all 1,2,3,4,5 Best case is to design a class so that you have a rule of 0. But it's not always possible. It will depend on the nature of your class members. It's bad practice to have them as raw pointers because then you have to write these constructors carefully and also think about resource leakage. Sometimes, we make them shared pointer or unique pointer etc. to reduce our work of writing these constructors and methods. If your class members are themselves following the rule of 0,3,5 etc., then it will also affect your decision whether you have to give all 5 or 0 or 3. In a nutshell, it's always a good practice to think about these five methods, whenever you write a new class. Good question!! read less
Comments
Dislike Bookmark

Related Questions

How would you round off a value from 1.66 to 2.0?
By adding 1.0 (float) to the integer part (type casted) of 1.66.
Dhanya
0 0
6
What is an lvalue?
L-value is short form for left side value. Similarly, r-value, means, right side value.
Nagasanthoshi
Who is the inventor of C programming?
Dennis Ritchie in the year of 1970 created C Programming language. He is a computer czar also helped to develop the Unix operating system.He died in the year of 2011 on Wednesday at his home in Berkeley Heights, New Jersey
Shreya
0 0
7
Is it good practicing c++ in code blocks instead of turbo c++?
Practicing/working on Turbo C++ is always good..because its hard to do comparatively 'code blocks'. seems 'code blocks' has been designed by considering the latest working tools(like Visual Studio from...
Santosh

What is C language?
It is a general purpose high level language used to make software for operating systems (kernel programms), game development, Embedded devices etc. It avoids the complexity of writing machine code and...
Shiva

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

Ask a Question

Related Lessons

Facts about C language
C programming language was developed in 1972 by Dennis Ritchie at AT&T Bell Labs. It was developed to overcome the problems of languages such as B, BPCL. It was developed to write the Unix operating...

Manoj S.

0 0
0
C Program-Infinite Loop[For] Demo
//Header Files #include<stdio.h>#include<conio.h> //Main function void main(){ //Function for clearing screen clrscr(); //Infinite for loop for(;;) { printf("Hello!"); } //Function for...

Salim Ahmed Ansari

0 0
0
Why Indexing Should Start From Zero In Array ?
Why numbering should start at zero? To denote the subsequence of natural numbers 2, 3, ..., 12 without the pernicious three dots, fourconventions are open to usa) 2 ≤ i < 13b) 1 < i ≤ 12c)...

Sunil Yadav

0 0
0
What is a Programming Language
What is a Language? Language is a communication system of human. What is a programming Language? A programming Language is a formal constructed language design to communicate...

Clevigour Solutions

0 0
0
Basic Concepts of Web Designing
An introduction to domain names, web servers, and website hosting 1)What is the web? In a nutshell, the web is a whole bunch of interconnected computers talking to one another. The computers (on the...

Dev Group

2 0
0

Recommended Articles

Lasya Infotech: An educational Training...

Lasya Infotech is a Hyderabad based IT training institute founded in 2016 by O Venkat. Believing in his innovation, passion and persistence and with a diverse blend of experience, he started his brainchild to deliver exemplary professional courses to aspiring candidates by honing their skills. Ever since the institute envisions...

Read full article >

Brilliant Academy, a reputed B. Tech Tuition...

Brilliant Academy is one of the reputed institutes for B.Tech tuition classes. This institute is specialised in delivering quality tuition classes for B.E, Engineering - all streams and Engineering diploma courses. Incorporated in 2012, Brillant Academy is a brainchild of Mr Jagadeesh. The main motto of the academy is to...

Read full article >

8 Hottest IT Careers of 2014!

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 >

Top 5 Skills Every Software Developer Must have

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 >

Find C Language Classes near you
C Language Classes in Bangalore
C Language Classes in Hyderabad
C Language Classes in Delhi
C Language Classes in Pune
C Language Classes in Chennai
C Language Classes in Mumbai
C Language Classes in Kolkata
C Language Classes in Ahmedabad
C Language Classes in Noida
C Language Classes in Jaipur

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
X

Looking for C Language Classes?

The best tutors for C Language Classes are on UrbanPro

  • Select the best Tutor
  • Book & Attend a Free Demo
  • Pay and start Learning

Learn C Language with the Best Tutors

The best Tutors for C Language Classes are on UrbanPro

This website uses cookies

We use cookies to improve user experience. Choose what cookies you allow us to use. You can read more about our Cookie Policy in our Privacy Policy

Accept All
Decline All

UrbanPro.com is India's largest network of most trusted tutors and institutes. Over 55 lakh students rely on UrbanPro.com, to fulfill their learning requirements across 1,000+ categories. Using UrbanPro.com, parents, and students can compare multiple Tutors and Institutes and choose the one that best suits their requirements. More than 7.5 lakh verified Tutors and Institutes are helping millions of students every day and growing their tutoring business on UrbanPro.com. Whether you are looking for a tutor to learn mathematics, a German language trainer to brush up your German language skills or an institute to upgrade your IT skills, we have got the best selection of Tutors and Training Institutes for you. Read more

ThinkVidya Learning Pvt Ltd © 2010-2025 All Rights Reserved