2. The Problem With IF . . .
IF it is cold out THEN you will put a coat on
ELSE leave the coat at home
But what about if it rains!
We don’t know what to do!
We’re going to have to
make another IF statement
3. The Problem With IF . . .
IF it is cold out THEN you will put a coat on
ELSE leave the coat at home
IF its raining THEN you will put a coat on
ELSE leave the coat at home
But what if its sunny! We’re
going to have make another
IF statement
4. The Problem With IF . . .
IF it is cold out THEN you will put a coat on
ELSE leave the coat at home
IF its raining THEN you will put a coat on
ELSE leave the coat at home
IF its sunny THEN go and get you sunglasses
ELSE leave the sunglasses at home
BUT WHAT IF ITS SNOWING!
5. The Problem With IF . . .
IF it is cold out THEN you will put a coat on
ELSE leave the coat at home
IF its raining THEN you will put a coat on
ELSE leave the coat at home
IF its sunny THEN go and get you sunglasses
ELSE leave the sunglasses at home
IF its snowing THEN go put on your snow joggers
ELSE leave the snow joggers at home
This isn’t very efficient! Plus its confusing
6. Select Case To The Rescue!
• Select case is like IF but allows you to test
many things at once in one construct
• This is
– less confusing
– Easier to type up
– Easier to modify
7. Select Case To The Rescue!
In Select case, a variable is tested using a criteria.
Case: Cold or Case: Sunny?
raining? Get your
Get your coat sunglasses
on!
Case: Snow?
Get your snow
Weather
joggers on
8. Select Case in VB
Select Case WEATHER
Case cold, raining
put your coat on!
Case sunny
put your sunglasses on
Case snow
put your snow joggers on
End Select
