In many computer programming languages, a do while loop is a control flow statement that executes a block of code and then either repeats the block or exits the loop depending on a given boolean condition.
The do while construct consists of a process symbol and a condition. First the code within the block is executed. Then the condition is evaluated. If the condition is true the code within the block is executed again. This repeats until the condition becomes false.
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.
This means that the code is always executed first and then the expression or test condition is evaluated. This process is repeated as long as the expression evaluates to true. If the expression is false the loop terminates. A while loop sets the truth of a statement as a necessary condition for the code's execution. A do-while loop provides for the action's ongoing execution until the condition is no longer true.
It is possible and sometimes desirable for the condition to always evaluate to be true. This creates an infinite loop. When an infinite loop is created intentionally there is usually another control structure that allows termination of the loop. For example, a break statement would allow termination of an infinite loop.
Some languages may use a different naming convention for this type of loop. For example, the Pascal and Lua languages have a "repeat until" loop, which continues to run until the control expression is true and then terminates. In contrast a "while" loop runs while the control expression is true and terminates once the expression becomes false.
as a pre-test loop. Compare this with the dowhileloop, which tests the condition/expression after the loop has executed. For example, in the languages...
is_there_more_data. By contrast, the following loop will not end by itself: birds = 1 fish = 2 while birds + fish > 1 do birds = 3 - birds fish = 3 - fish end...
are used to indicate the usage of a for loop: descendants of ALGOL use "for", while descendants of Fortran use "do". There are other possibilities, for example...
into a goto-free form involving only choice (IF THEN ELSE) and loops (WHILE condition DO xxx), possibly with duplicated code and/or the addition of Boolean...
in the loop. If condition is initially false, the code inside the loop will never be executed. In PL/I this is a DOWHILE... statement. while (condition)...
statement. Unlike other for loop constructs, however, foreach loops usually maintain no explicit counter: they essentially say "do this to everything in this...
} The syntax for a PHP dowhileloop is as follows: do { // statements; } while (condition); The syntax for a PHP for each loop is as follows: foreach...
science, loop inversion is a compiler optimization and loop transformation in which a whileloop is replaced by an if block containing a do..whileloop. When...
C's while (1) { doSomething(); } results in a compilation error. In the whileloop, the test is done before each iteration. while (i < 10) { doSomething();...
returns to the beginning of the loop and the cycle of check and conditional execution begins again. By contrast, a dowhileloop first executes the action,...
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method. do The do keyword is used in conjunction with while to create a do-whileloop, which executes a block of statements associated with the loop and then...
instructing him to break the time loop he is trapped in. In order to do this, he must kill all eight Visionaries before time loops at the end of the day. Complicating...
when a given condition is evaluated as true. while (i == true) { ... } do { } while (i == true); The for loop consists of three parts: declaration, condition...
program, as it often does, it may be termed the main loop or main event loop. This title is appropriate, because such an event loop is at the highest level...
Repeat loop may refer to: For loop – Commonly known as the repeat (x) { ... } loop. Dowhileloop – Known as the repeat { ... } until (!CONDITION) loop. Infinite...
can exit the outer loop here if no swaps occurred. break do-whileloop end if swapped := false for each i in length(A) − 1 to 0 do: if A[i] > A[i + 1]...
step 3 } while (hunting_for_cutting_planes /* parameter of the algorithm; see 3.6 */ && cutting_planes_found); // end step 3.2 do-whileloop } // end...
members built a game with a hero wandering in a loopwhile the player built around it. They did not do much with this idea until the Ludum Dare game jam...
In the kidney, the loop of Henle (English: /ˈhɛnli/) (or Henle's loop, Henle loop, nephron loop or its Latin counterpart ansa nephroni) is the portion...
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