Functions and Procedures

Question 1

What is a procedure?

Answer 1

A sequence of steps that performs a task but does not return a value to the caller

Identified by a name and called to execute a specific sub-task.

Question 2

What is a function?

Answer 2

Similar to a procedure but designed to return a value to the caller after executing its sub-task

Functions are essential for operations requiring output.

Question 3

What does it mean to pass parameters by value?

Answer 3

The actual value of a variable is passed to the function or procedure, and a copy is made

The original variable remains unchanged.

Question 4

What does it mean to pass parameters by reference?

Answer 4

The address (reference) of the variable is passed, allowing the function or procedure to modify the original variable

This enables direct manipulation of the variable’s value.