References In C++

Definition:

A reference variable is a “reference” to another variable. Better definition: A reference variable is just another pointer variable which will take its own space in memory from here References are nothing but constant pointers in C++. A statement int &i = j; will be converted by the compiler to int *const i = &j . Again from here

Usage:

Declare a reference as such with the “&”:

#include <iostream>
using std::cout;
int main(){

std::string firstName = "Kauress";
std::string &firstNameRef = firstName;

cout << firstName << "\n";
cout << firstNameRef << "\n";
}

When you change the value of the reference variable you also change the value of the original variable. For example


<

pre class="wp-block-code"><code>#include <iostream>
using std::cout;

int main(){

std::string firstName = "Kauress"; //Kauress
std::string &firstNameRef = firstName; //Kauress

cout << firstName << "\n";
cout << firstNameRef << "\n";

firstNameRef = "Love";

cout << firstName << "\n"; //Love
cout << firstNameRef << "\n"; //Love
}

References in C++

Definition:

Usage:

Kauress

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