In this tutorial, you will learn how reference variables are used in the C++ programming language and their usage. A reference variable is a variable that stores reference to its data or object.
For example:
int i = 0; int& r = i;
Below is a simple program of how reference variables work in C++.
C++ reference variables
#include <iostream> using namespace std; int main() { int a=2; int &b = a; cout << endl << "The value of a is: " << a; cout << endl << "The value of b is: " << b << endl; return 0; }
Output
The value of a is: 2 The value of b is: 2
Tip
Since Refence variable are alias of already existing variables, they do not take up memory space.
Happy Coding!

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