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Dim counter As Integer = 5 ' init variable and set value Dim factorial As Integer = 1 ' initialize factorial variable Do While counter > 0 factorial = factorial * counter counter = counter-1 Loop ' program goes here, until counter = 0 'Debug.Print factorial ' Console.WriteLine(factorial) in Visual Basic .NET
Loop or While condition instructions Wend (Visual Basic .NET uses End While instead) Do instructions Loop While condition or Do instructions Loop Until notcondition: i must be declared beforehand. For i = first To last «Step 1» instructions Next i. For Each item In set instructions Next item: Visual Basic .NET: For i« As type» = first To ...
Comparison of Visual Basic and Visual Basic .NET; ... (for & while loops), F# (verbose syntax) [11] Visual Basic, Fortran, TUTOR (with mandatory indenting of block ...
Early BASICs (such as GW-BASIC) used the syntax WHILE/WEND. Modern BASICs such as PowerBASIC provide both WHILE/WEND and DO/LOOP structures, with syntax such as DO WHILE/LOOP, DO UNTIL/LOOP, DO/LOOP WHILE, DO/LOOP UNTIL, and DO/LOOP (without outer testing, but with a conditional EXIT LOOP somewhere inside the loop). Typical BASIC source code:
If xxx1 is omitted, we get a loop with the test at the top (a traditional while loop). If xxx2 is omitted, we get a loop with the test at the bottom, equivalent to a do while loop in many languages. If while is omitted, we get an infinite loop. The construction here can be thought of as a do loop with the while check in the middle. Hence this ...
Here is one example of an infinite loop in Visual Basic: dim x as integer do while x < 5 x = 1 x = x + 1 loop This creates a situation where x will never be greater than 5, since at the start of the loop code, x is assigned the value of 1 (regardless of any previous value) before it is changed to x + 1.
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Visual Basic (VB) before .NET, sometimes referred to as Classic Visual Basic, [1] [2] is a third-generation programming language, based on BASIC, and an integrated development environment (IDE), from Microsoft for Windows known for supporting rapid application development (RAD) of graphical user interface (GUI) applications, event-driven programming and both consumption and development of ...