The If Statement

Normally programs flow along line by line (linear execution) in the order in which it appears in your source code. The if statement enables you to compare two particular variables (objects) and jump (branch) to different parts of your code depending on the result of that comparison.

Syntax for If Statements

General Case	Sample
if condition Thenstatement  If condition Then    statement     statement  End If	If mark >= 80 Then Label1.Caption = "Honour Roll" If mark >= 80 Then      Label1.Caption = "Honour Roll"       Label2.Caption = "Good Work" End If
If-Else Case	Sample
If condition Then     statement     statement  Else    statement  End If	If mark >= 80 Then      Label1.Caption = "Honour Roll"      Label2.Caption = "Good Work" Else      Label1.Caption = "Not Honour Roll"      Label2.Caption = "Try Harder" End If
If-ElseIf Case	Sample
If condition Then    statement     statement  ElseIf condition Then    statement  Else    statement  End If	If mark >= 80 Then      Label1.Caption = "Honour Roll"      Label2.Caption = "Good Work" ElseIf mark >= 70 Then      Label1.Caption = "Not Honour Roll"      Label2.Caption = "Nice Try" Else      Label1.Caption = "Not Honour Roll"      Label2.Caption = "Try Harder" End If

Compound Checking Conditions & Lo

	The LOGIC involved	Example of Use
And	Both Conditions must be TRUE	If (age >= 18) And (age <=65) Then Label1.Caption = "You are Hired"
Or	Either Condition may be true	If (age < 18) Or (age >65) Then Label1.Caption = "You are NOT Hired"
Not	The result of the condition is reversed	If Not (name = "Bart") Then Label1.Caption = "You may go on the trip"
Xor	Only one of Condition is true

** The AND operator binds more strongly than the OR operator just like the multiplication (*) operator takes precedence over the addition (+) operator. If you keep this in mind, it will help you to debug logic errors in your code.