Explain reference types, C/C++ Programming

Assignment Help:

Reference Types

The symbol "&" is interpreted as an address operator as well as AND operator. This operator is also used to declare a "reference variable". A reference is referred to an alias, serves as an alternative name for the object.

e.g.

                int ival  = 1024;

                int &rval  =  ival;  // rval is reference to ival

  • A reference variable should be initialized at time of declaration itself.

e.g.

                int &iref;              // wrong

                int &iref  =  ival  //o.k.

  • Once a reference has been made to a variable, it cannot be altered to refer to another variable.

e.g.

void main()

{

                  int num1  =  10, num2  =  200;

                  int &ref  =  num1;

  cout<< num1 << num2 << ref ;                //10,200,10;

  ref  =  num2;

  cout << num1 << num2 << ref ;               //200,200,200

                      }

It changes the contents of the original variable, which is not the desired action.

 


Related Discussions:- Explain reference types

Write a function that computes the total interest charged, You are going to...

You are going to write a function that computes the total interest charged on a credit card before it is paid off. List all the inputs the function will need.

Write a program that illustrate union declaration, Write a Program that ill...

Write a Program that illustrate union declaration? A C program encloses the following union declaration: union id { char color[12]; int size; } shirt, blouse; At this

Change to palindrome, A palindrome is a string that reads the same from bot...

A palindrome is a string that reads the same from both the ends. Given a string S convert it to a palindrome by doing character replacement. Your task is to convert S to palindrome

Define array of objects, Array of Objects A class is a template, which ...

Array of Objects A class is a template, which can contain data items as well as member functions to operate on the data items. Various objects of the class can also be declared

It/218.., Write a program that does the following: Calculates the Velocity ...

Write a program that does the following: Calculates the Velocity and Momentum of an object. The formula for the velocity is V=d/t and the formula Momentum is m=mass*velocity. Your

Define enumeration in computer programming, Define Enumeration in Computer ...

Define Enumeration in Computer Programming? Enumerated types enclose a list of constants that are able to be addressed in integer values. We can declare variables and types

Buffer overflow, Can you help me with a C++ project?

Can you help me with a C++ project?

Coding Arena A B C D E F G, Damjibhai and Sham...

Damjibhai and Shamjibhai are two jeweler friends. They decide to play a simple game. The game comprises of removing the jewels for polishing, turn by turn. Once a jewel is removed

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