Modern C++ for Absolute Beginners: A Friendly Introduction to the C++ Programming Language and C++11 to C++23 Standards

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2023

S. DmitrovićModern C++ for Absolute Beginnershttps://doi.org/10.1007/978-1-4842-9274-7_12

12. References

Slobodan Dmitrović¹  

(1)

Belgrade, Serbia

 

Another (somewhat) similar concept is a reference type. A reference type is an alias to an existing object in memory. References must be initialized. We describe a reference type as type_name followed by an ampersand &. Example:

int main()

{

    int x = 123;

    int& y = x;

}

Now we have two different names that refer to the same int object in memory. We can visualize the object in memory using the following image:

An illustration ...