What is the difference between pass by value and pass by reference in C++?

Asked by Last Modified  

3 Answers

Learn C++ Language

Follow 1
Answer

Please enter your answer

Sudhansu Swain

solve Physics and math question in shortcut way

The difference between pass-by-reference and pass-by-value is that modifications made to arguments passed in by reference in the called function have effect in the calling function, whereas modifications made to arguments passed in by value in the called function can not affect the calling function.
Comments
Dislike Bookmark

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

The main difference between pass by value and pass by reference is that, in a pass by value, the parameter value copies to another variable while, in a pass by reference, the actual parameter passes to the function.
Comments
Dislike Bookmark

Computer Science Faculty with 18 years of teaching C++ language

These two types of user-defined functions have a different way of dealing with data. In Call by value function, the main() code and the function maintain separate copies of the same variable in the memory, beacause of which any change in the variable value in the function will not change the value of...
read more
These two types of user-defined functions have a different way of dealing with data. In Call by value function, the main() code and the function maintain separate copies of the same variable in the memory, beacause of which any change in the variable value in the function will not change the value of the same variable in the main code unless it is returned back. While, in the Call by reference function, both the main() code and the function refer to the memory address of the same variable. Hence any change in the value of the variable reflects the change for both, permanently. read less
Comments
Dislike Bookmark

View 1 more Answers

Related Questions

What is inline function? Why pointers is not used in C++?
Inline function is the optimization technique used by the compilers. One can simply prepend inline keyword to function prototype to make a function inline. Inline function instruct compiler to insert complete...
Avinash
Describe about private access specifier?
Private keyword, means that no one can access the class members declared private outside that class. By default class variables and member functions are private.
Prasad
1 1
8
How do you link a C++ program to C functions?
Just include hedears file
Raj
1 0
5
What are the advantages of OOPL?
Object-Oriented Programming has the following advantages over conventional approaches: 1: OOP provides a clear modular structure for programs which makes it good for defining abstract datatypes where...
Mohan
3 0
6
I would like to be part of UrbanPro as a tutor
Contact urbanpro.com.
Sreepa

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

Ask a Question

Related Lessons

Set 0 To Kth Bit In A Variable
The following code snippet Set 0 to Kth Bit in an variable #include int UnsetBitValue(int n, int k);int main(){ printf("%d\n\n",UnsetBitValue(255,6)); return 0;}// Set kth bit to zeroint UnsetBitValue(int...

Umasankar Natarajan

0 0
0
How do i get best Campus / Off Campus Placement?
Companies are looking for Skilled Freshers. So build your technical skills while doing MCA / BTech / BCA / BSc (IT or CS) into below areas- 1. Strong your programming & debugging skills ...

Amit K.

0 0
0
Compare C And C++ In Terms Of Header Files.
1."stdio.h" in c program controls input-output functionalities and operations associated with it where as in c++ program iostream.h" controls input-output functionalities and operations associated with...

Suprio Dutta

1 0
0
File Handling in C++ : Lesson 1 Data Persistence
Data persistence refers to the existence of data in the program. In other words, it means the life of data. Data is the most significant part of a program and it must be stored properly and easily retrieved...
J

Jigyasa Sidhu

0 0
0
Efficient Learning Strategies
Type your notes after class Write your notes onto flashcards - Scrabble -Make posters Review flashcards while walking, at gym, etc. Dog-ear pages in the reading where you can find...

Vijith V T

1 0
0

Recommended Articles

About C++ Programming Language

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 >

What is Applications Engineering all about?

Applications engineering is a hot trend in the current IT market.  An applications engineer is responsible for designing and application of technology products relating to various aspects of computing. To accomplish this, he/she has to work collaboratively with the company’s manufacturing, marketing, sales, and customer...

Read full article >

Make a Career as a BPO Professional

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 >

Learn Microsoft Excel

Microsoft Excel is an electronic spreadsheet tool which is commonly used for financial and statistical data processing. It has been developed by Microsoft and forms a major component of the widely used Microsoft Office. From individual users to the top IT companies, Excel is used worldwide. Excel is one of the most important...

Read full article >

Find C++ Language Classes near you
C++ Language Classes in Bangalore
C++ Language Classes in Delhi
C++ Language Classes in Hyderabad
C++ Language Classes in Pune
C++ Language Classes in Chennai
C++ Language Classes in Mumbai
C++ Language Classes in Kolkata
C++ Language Classes in Noida
C++ Language Classes in Gurgaon
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