Function parameters
Like variables used in a function always initialized with a value provided by the caller of the function
Definition of function parameters
In the function declaration by placing them between the parenthesis after the function identifier with multiple paramethers separated by coma
Argument
Value that is passed from the caller to the function when the call is made
Pass by value
When a function is called all the paramethers are created as variables, and the value is copied to the matching parameters
Use of the parameters with return value
We create function that takes data as input do some calculations with it and returns the value to the caller