Functions help break a program into smaller pieces. This avoids repetition of code, making larger programs more efficient and easier to maintain.
A function is a block of code that is only executed when called within a program.
You can pass data to the function. This data is known as a parameter or argument.
Arguments or parameters are specified inside parentheses after the function name, for example:
functionName(parameters)
A function can return data as a result.
Declaring Functions
You can declare
a new function ...
