A reference **is an alias, or an alternative name**, for an existing variable. It **provides a way to access the value of a variable indirectly** through another name. They **do not have a memory address of their own**. Instead they refer to the memory address of the variable they are referencing.

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Now `referenceVariable` is an alias for `originalVariable`. The primary purpose of references is to **simplify and make safe, more readable code** and **avoid unnecessary memory overhead.**

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Introduction to References

Advantages of Reference

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Introduction to References

Advantages of Reference