The loop construct found in nearly all imperative programming languages which executes one or more instructions (the "loop body") repeatedly so long assome 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 () <statement> where is any expression and <statement> is any statement, including a compound statement within braces "..". (1995-03-14)