Explain functions and how to pass values using by reference and by value. Use examples (code examples) to explain the concept.

Invoking a function that takes many arguments, the order in which parameters are supplied is crucial.

Why is defining functions so important when writing code?

Local declarations are those that are kept in the memory of the computer; but, how exactly are they kept in memory? If reaching one's objective can be done without making use of local declarations, then doing so is a waste of time. Why bother using value parameters when you can just use references as your arguments in any function? How crucial are value parameters when it comes to the processing of programmed data?