Differences Between Sub Procedure and Functions

Functions Sub Procedures
Functions are a set of reusable code which can be called anywhere in a program as per requirement.
Sub Procedures are also like functions it can also be called anywhere in our program as per requirements.
Functions may or may not return a value .
While sub Procedures does not return a value.

During calling a function Programmer have to use call keyword.
While during calling Sub Procedure there is not requirement of call keyword.

Syntax : 
 function excelvbaport()
{ 
 ‘Set of codes 
 }

 Syntax : 
 Sub excelvbaport() 
 ‘Set of codes 
 End Sub
Functions are very useful to divide a big program into simple and short program. Similarly Sub Procedures are also divide a long program into short programs.

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Introduction to VBA

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