Final Exam Review Part 4 - VBA ChE 160 SI – Becca Fall 2016

Introduction Define/explain the following terms: MsgBox() InputBox() ‘ “ Option Explicit Dim ___ As ___ & ampersand .xlsm

Introduction- Answers MsgBox() output/display from file InputBox() input information into VBA ‘ single apostrophe comment “ double apostrophe string Option Explicit have to dimension/define all variables as their data types Dim ___ As ___ how to dimension variables & ampersand concatenate/piece together strings and variables .xlsm how to save Macro files

&&& Ampersand Practice &&&

Common Errors Missing or misplaced “___” Misspell MsgBox() or InputBox() Forgot to Dim variable As datatype

Loops Write out the basic structure of these loops If loop For loop Do loop

If Loop- Answers If <conditional statement> Then (calculations/commands) ElseIf <another conditional statement> Then (Calculations/commands) Else End If

For Loop- Answers For <counter> = ___ To ___ Step ____ (calculations/commands) Next <counter>

Do Loop- Answers Do (calculations/commands) If <conditional statement> Then Exit Do Loop

Operators Define the conditional operators = <> < > <= >=

Operators- Answers Conditional Operators = equal to <> not equal to < less than > greater than <= less than or equal to >= greater than or equal to

Subroutines and Functions Difference between sub routine and function Difference between ByRef and ByVal Basic structure of a function Basic structure of a subroutine

Subroutines- Answers Difference between sub routine and function Sub does not return anything, function gives a final result. Also, subroutines are called Difference between ByRef and ByVal ByRef = By Reference, takes the reference variable and changes the value everywhere ByVal = By Value, only uses the values locally

Subroutine and Function Structure- Answers Basic structure of a function Function <functionname> (<ByVal or ByRef> <variablename> As <data type>, …….) As <data type> (statements and calculations) <function name> = <expression> NOTE: function has function name as final variable which will be the answer displayed when run. Basic structure of a subroutine Sub <subroutinename> (<ByVal or ByRef> <variablename> As <variabletype>, ….) (statements with variables in argument list and declared in subprogram) End sub

Inputs and Outputs Output vs Append vs Input Print vs Write vs Input

Inputs and Outputs- Answers Append Input Open (pathname\filename) For Output As #filenumber Open (pathname\filename) For Append As #filenumber Open (pathanme\filename) For Input As #filenumber VBA will create the file if one doesn't exist Has to exist before opening Write over everything in the file Adds onto a file Brings information into VBA Ends with Close #filenumber

Inputs and Outputs- Answers Print Write Input Print #filenumber, [outputlist] Write #filenumber, [outputlist, comma delimited] Input #filenumber, variablelist Variables can be separated using semicolons or commas Values have to be separated by commas Values have to be designated as correct data type to be inputted ( "" around strings, everything separated by commas) Comma separates by tabs Write file has commas still in between data types Semicolon separates by spaces

Arrays How do you create an array using VBA?

Arrays- Answers For Count = 1 To 11 Column(Count, 1) = 2 * Count - 1 Next Count

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