Programming Fundamentals in Visual Basic by Rex A. Barzee

Author:Rex A. Barzee
Language: eng
Format: azw3, epub, pdf
Tags: COMPUTERS / Programming Languages / Visual BASIC, COMPUTERS / Desktop Applications / Spreadsheets
Publisher: Maia LLC
Published: 2017-05-11T07:00:00+00:00

Example 12

Public Function IsPrime(candidate As Long) As Boolean Dim divisor As Long, limit As Long, remainder As Long IsPrime = True divisor = 2 limit = Int(Sqr(candidate)) For divisor = 2 To limit remainder = candidate Mod divisor If remainder = 0 Then IsPrime = False Exit For End If Next divisor End Function

Desk Check

candidate IsPrime divisor limit remainder

8

Repetitive Strings

Occasionally we need the computer to produce a string that has a repeating pattern. We can use a loop to cause the computer to build such strings. Consider the string “0, 2, 4, 6, 8, 10” with the simple pattern of counting by twos. Here is code that builds this string and displays it to the user.

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