For…Next : Nested Loop X= 0 For i = 0 To 4 For j = 0 To i-1 X=X+(i+j-1) Next j Next i How many times the inner loop is executed? What is x at the end of this loop?

Nested For…Next : Execution i=0 j=0  -1 i=1 j=0  0 i=2 j=0  1 i=3 j=0  2 i=4 j=0  3 No. of times inner loop is executed x

For…Next : Exit X= 0 For i = 0 To 4 For j = 0 To i-1 If x > 5 Then Exit For End If x=x+(i+j-1) Next j Next I Exit from the inner loop

Do…Loop Do While logical expression Executable statement(s) Loop Do Executable statement(s) Loop Until logical expression

Do While…Loop

Do…Loop Until…

Do Loops Sum = 0 Kount = 0 Do While Kount <= 10 Sum = Sum + Kount Kount = Kount + 1 Loop Sum = 55 Kount = 11 Sum = 0 Kount = 0 Do Sum = Sum + Kount Kount = Kount + 1 Loop Until Kount > 10 Sum = 55 Kount = 11

Decimal to Binary : Do While Private Sub Command1_Click() Dim Deci As Integer Dim R As Byte, Bin As String Deci = Text1.Text Bin = "" Picture1.Cls If Deci = 0 Then Bin = Str(Deci) End If Do While Deci > 0 R = Deci Mod 2 Bin = Str(R) + Bin Deci = Deci \ 2 Loop Picture1.Print Bin End Sub

Decimal To Binary: Do…Until Private Sub Command3_Click() Dim Deci As Integer Dim R As Byte, Bin As String Deci = Text1.Text Bin = "" Picture1.Cls Do R = Deci Mod 2 Bin = Str(R) + Bin Deci = Deci \ 2 Loop Until Deci = 0 Picture1.Print Bin End Sub

File Handling  Files are used for large data input/output  Create a.txt file called CarData by using Notepad (or ASCII file using other software) with following contents “Suzuki”, 3, 4 “Toyota”, 5, 7 “Honda”, 4, 15

File Handling  Files must be Open ed before any read/write operation.  Files must be Close d after any read/write operation  Syntax Open “CarData” For Input As #138  Opens a file called CarData.txt for read- only and this file will be called #138  The file reference number can be from 1 to 255