Programming Tutorials

Nested If and Single line if statement

By: Issac in VB.net Tutorials on 2008-11-08  

Nested If statement

Option Strict On
Imports System
Module Module1
Sub Main()
Dim temp As Integer = 8
If temp <= 8 Then
If temp = 8 Then
Console.WriteLine("temp = 8")
Else
Console.WriteLine("Temp: {0}", temp)
End If
End If
End Sub
End Module

Nested if statement helps to check multiple number of conditions here in this example we take a variable temp and assign the value of 8 to it now in the first if statement we check whether temp is less than or equal to 8(which is true) so it will get into the next if statement which checks whether temp is equal to 8(which is again true) and prints temp =8.

Single line if statement

public class Test
public Shared Sub Main
Dim Score As Integer
Score = 23

'Single line If statement.

If Score < 50 Then Console.WriteLine("Failed.") : Console.WriteLine("Please try again.")

'Multi-line If statement.

If Score < 50 Then
Console.WriteLine("Failed.")
Console.WriteLine("Please try again.")
End If
End Sub
End class

In this example we have shown both multi-line and single line if statements, single line if statements though may look complex if you have large number of conditions is effective and helpful to reduce the number of program lines.






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