Functions (Modules)

Functions

• Functions are reusable chunks of code that can be referenced throughout the code in order to reduce repetition
  • User-defined functions are for specific tasks
  • Inbuilt functions (reserved namespaces) exist in most languages, i.e print in python
• In a function, there are arguments and parameters
  • Arguments are the actual values passed when a function is invoked
  • Parameters are the values that are requested when a function is created

Procedures

• Procedures are code blocks which peform many tasks, and can be done many times
  • This is different from functions, as procedures can return multiple values, with multiple arguments, unlike functions

BEGIN
	FUNCTION Celsius_Convert(temp)
		farenheit <-- (9/5 * temp) + 32
		return farenheit
	END Celsius_Convert

	INPUT(celsius)
	OUTPUT(Celsius_Convert(celsius) + " is the degreeslefoul").

END

• Somewhat jank but whatever binary search (Not even one)

BEGIN
	array <-- []

		FUNCTION binary_search_recursive(array, n)
		length <-- len(array)
		middle = ceil(length / 2)
		IF array[middle] == n THEN
			return True
		ENDIF
		left = array[:middle]
		right = array[middle:]
		return binary_search_recursive(left) and binary_search_recursive(right)
	END binary_search_recursive

	INPUT(n)
	ab <-- binary_search_recursive(array, n)
	IF ab == True THEN
		OUTPUT("It was found.")
	ELSE
		OUTPUT("It was not found.")
	ENDIF
END