5.12: Iterations (Glossary)

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accumulator: A variable used in a loop to add up or accumulate a result.
counter: A variable used in a loop to count the number of times something happened. We initialize a counter to zero and then increment the counter each time we want to "count" something.
decrement: An update that decreases the value of a variable.
initialize: An assignment that gives an initial value to a variable that will be updated.
increment: An update that increases the value of a variable (often by one).
infinite loop: A loop in which the terminating condition is never satisfied or for which there is no terminating condition.
iteration: Repeated execution of a set of statements using either a function that calls itself or a loop.