What are the different parameter passing methods in C++?

What are the different parameter passing methods in C++?

In C++, there are mainly three parameter passing methods: pass by value, pass by reference, and pass by pointer.

Can you explain pass by value?

Sure! In pass by value, a copy of the actual parameter is made and passed to the function. Changes made to the parameter inside the function do not affect the original argument.

What about pass by reference?

In pass by reference, a reference to the actual parameter is passed to the function. This means that changes made to the parameter will affect the original argument.

And how does pass by pointer work?

Pass by pointer involves passing the address of the actual parameter to the function. The function can then modify the value at that address, affecting the original variable.