Computing Dictionary
while loop definition
programming The
loop construct, found in nearly all
procedural languages, that executes one or more instructions (the "loop body") repeatedly so long as some
condition evaluates to true. In contrast to a
repeat loop, the loop body will not be executed at all if the condition is false on entry to the while.
For example, in
C, a while loop is written
while (
) ;
where is any expression and is any statement, including a compound statement within braces "..".
A for loop, e.g. in the C language, extends the while loop syntax to collect pre-loop initialisation and loop-end logic into the beginning of the statement.
Perl provides the "until" loop that loops until the loop condition is true.
(2009-10-07)
