Search results
Results From The WOW.Com Content Network
Do while loops check the condition after the block of code is executed. This control structure can be known as a post-test loop. This means the do-while loop is an exit-condition loop. However a while loop will test the condition before the code within the block is executed.
A possible variant is to allow more than one while test; within the loop, but the use of exitwhen (see next section) appears to cover this case better. In Ada, the above loop construct (loop-while-repeat) can be represented using a standard infinite loop (loop - end loop) that has an exit when clause in the middle (not to be confused with the ...
Iterative for-loops can contain multiple conditionals, such as for(int i = 0; i < 10 && somethingTrue; i++). This is a legacy of C, where the for statement is basically syntactic sugar for a while statement. The getter and setter of a property may implement separate interfaces.
MaxValue) Loop ' Output of Floyd's Triangle Dim current As Integer = 1 Dim row As Integer Dim column As Integer For row = 1 To rows For column = 1 To row Write ("{0,-2} ", current) current += 1 Next WriteLine Next End Sub ''' <summary> ''' Like Console.ReadLine but takes a prompt string. ''' </summary> Function ReadLine (Optional prompt As ...
However, infinite loops can sometimes be used purposely, often with an exit from the loop built into the loop implementation for every computer language, but many share the same basic structure and/or concept. The While loop and the For loop are the two most common types of conditional loops in most programming languages.
Pascal has two forms of the while loop, while and repeat. While repeats one statement (unless enclosed in a begin-end block) as long as the condition is true. The repeat statement repetitively executes a block of one or more statements through an until statement and continues repeating unless the condition is false. The main difference between ...
for i from f by b to t while w do # loop body od; All parts except do and od are optional. The for I part, if present, must come first. The remaining parts (from f, by b, to t, while w) can appear in any order. Iterating over a container is done using this form of loop: for e in c while w do # loop body od;
In the C programming language, Duff's device is a way of manually implementing loop unrolling by interleaving two syntactic constructs of C: the do-while loop and a switch statement. Its discovery is credited to Tom Duff in November 1983, when Duff was working for Lucasfilm and used it to speed up a real-time animation program.