FIT 100
© Copyright University of
Washington 1999-2000
Repeating Terms
vIteration is the
repeated execution of a series of statements in programming
vTo perform
iteration, programming languages include special statements often called iteration statements
vThere are two
crucial components of all iterations:
oThe statements that
will be repeated -- called the loop body
oA test specifying
when to repetition stops -- termination test
vAdditionally, loops
typically have at least one variable that is explicitly changed “inside” the
loop -- this is called the iteration variable
Some value must change between consecutive
iterations, or
else the loop will never terminate … it is an infinite loop