What is parameter passing in C++?

What is parameter passing in C++?

Parameter passing in C++ refers to the method of passing arguments to functions. It can be done by value or by reference.

Can you explain the difference between passing by value and passing by reference?

Sure! Passing by value means a copy of the variable is passed, while passing by reference means a reference to the original variable is passed.

What are the advantages of passing by reference?

Passing by reference can be more efficient for large data structures since it avoids copying the entire object. It also allows the function to modify the original variable.

Are there any downsides to passing by reference?

Yes, one downside is that it can lead to unintended side effects if the function modifies the original variable without the caller's knowledge.