To protect all the sheets this macro uses all the methods contained in this page (see counting sheets). The If, Then statement is also used here. This tests for a condition and if the condition is TRUE, then the macro continuous the next line of code. In this case it will END the macro. If the condition is NOT TRUE, then it will go to the following line which in this case is to select the next sheet. You will also notice the For, Next statement is also used. This acts as a counter to tell the macro how many loops to run. In this case if there are 3 sheets, the macro will run 3 times protecting all the 3 sheets.
Dim myCount 'This line of code is optional
Dim i 'This line of code is optional
myCount = Application.Sheets.Count
Sheets(1).Select 'This line of code selects the 1st sheet
For i = 1 To myCount
If i = myCount Then