What are the advantages of using C++ references?

There are several benefits of using C++ references:

1. Simplify code: Using references can simplify code, making it more readable and understandable. By using references, you can avoid copying large objects in function parameters, improving code efficiency and performance.
2. Efficiency is high when passing large objects: By using references as function parameters to pass large objects, there is no need to make copies of the objects. Instead, the object’s reference is passed directly, thus improving the code’s execution efficiency.
3. Modify actual parameters: By using references, it is possible to change the value of actual parameters inside a function, not just the value of formal parameters. This method allows for easily changing the incoming parameters without needing to return the modified values.
4. As a return value, a function can return a reference, allowing for further operations on the returned object after the function is called. This approach can avoid object copying and improve code efficiency and performance.
5. As an alias: A reference is an alias for an object, allowing you to manipulate the object without directly interacting with it. This can simplify the code, making it clearer and easier to read.

In summary, using C++ references can improve code efficiency and performance, simplify code, easily modify arguments and manipulate objects, making the code more clear and readable.