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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 ...
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 ...
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.
In some language descriptions the meaning of compound statements is defined by the use of 'simpler' constructions, e.g. a while loop can be defined by a combination of tests, jumps, and labels, using if and goto.
This feedback loop was addictive. The feeling of getting better and better was a rush. Writing programs flowed from a combination of skills that came easy to me: logical thinking and an ability to ...
Microsoft founder Bill Gates is telling his “origin story” in his own words with the memoir Source Code, being released on Feb. 4 "My parents and early friends put me in a position to have a ...
Talk about a tale of two cities. A new report calls New York one of the best cities in the country for an active lifestyle — while a spot right across the Hudson River ranks as one of the worst ...