Computer Science for IGCSE & O level - Programming (Section 5 - No. 15)
Which of the following statements about functions and procedures is true?
Functions always return a value; procedures never return a value.
Procedures always return a value; functions never return a value.
Functions can return a value, and procedures can also return a value, but not always.
Functions and procedures do the same thing, but are named differently depending on the programming language.
Explicación
Functions primarily return values, while procedures may or may not.