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  2. While loop - Wikipedia

    en.wikipedia.org/wiki/While_loop

    Because the while loop checks the condition/expression before the block is executed, the control structure is often also known as a pre-test loop. Compare this with the do while loop , which tests the condition/expression after the loop has executed.

  3. Control flow - Wikipedia

    en.wikipedia.org/wiki/Control_flow

    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 ...

  4. Do while loop - Wikipedia

    en.wikipedia.org/wiki/Do_while_loop

    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.

  5. Conditional loop - Wikipedia

    en.wikipedia.org/wiki/Conditional_loop

    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.

  6. Structured programming - Wikipedia

    en.wikipedia.org/wiki/Structured_programming

    The most common deviation from structured programming is early exit from a function or loop. At the level of functions, this is a return statement. At the level of loops, this is a break statement (terminate the loop) or continue statement (terminate the current iteration, proceed with next iteration). In structured programming, these can be ...

  7. Structured program theorem - Wikipedia

    en.wikipedia.org/wiki/Structured_program_theorem

    The structured program theorem, also called the Böhm–Jacopini theorem, [1] [2] is a result in programming language theory.It states that a class of control-flow graphs (historically called flowcharts in this context) can compute any computable function if it combines subprograms in only three specific ways (control structures).

  8. Condition precedent - Wikipedia

    en.wikipedia.org/wiki/Condition_precedent

    In computing, a while loop is an instruction to check a condition precedent, then execute an action only if that check evaluates to 'true'; after which execution, control then returns to the beginning of the loop and the cycle of check and conditional execution begins again.

  9. Loop variant - Wikipedia

    en.wikipedia.org/wiki/Loop_variant

    In computer science, a loop variant is a mathematical function defined on the state space of a computer program whose value is monotonically decreased with respect to a (strict) well-founded relation by the iteration of a while loop under some invariant conditions, thereby ensuring its termination.