VBScript Interview Question: Function vs Subroutine

In VBScript, both functions and subroutines are used for defining reusable blocks of code, but they have some key differences:

Function:

A function in VBScript returns a value after performing a specific task. It is designed to perform a specific operation and then return a value to the calling code.

Subroutine:

A subroutine, on the other hand, is used to perform a task without returning a value. It executes a block of code without returning any value to the calling code.

When deciding whether to use a function or a subroutine in VBScript, consider whether the task requires a return value or not. Functions are ideal for tasks that require returning a specific value, while subroutines are suitable for performing tasks without the need for returning any value.