Parameter Passing Techniques in C++

There are 3 different methods using which we can pass parameters to a function in C++. These are:

1. Pass by Value
2. Pass by Reference
3. Pass by Pointers

In C++, data must be sent to functions when they are called in order to perform operations. This data is called parameters or arguments and there are various parameter passing methods available in C++, each with merits and demerits of its own. In this article, we will discuss various parameter-passing techniques in C++.

Basic Terminologies

• Function Parameters: These variables, which indicate the data that the function anticipates receiving when called, are specified in the parameter list of a function.
• Actual Parameters: The expressions or values passed in during a function call. When the function is called, it receives these values as input.
• The parameters that the function signature declares. They serve as stand-ins for the values that are provided in when the function is called.