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The defect of many while loops is that the details that govern the
looping appear in three places: the place where the counting variable is
initialized, the place where it is tested, and the place where it is
reassigned. Such distribution makes looping difficult to understand.
Accordingly, you also need to know about the
for statement:
for (entry expression;
Boolean expression;
continuation expression)
embedded statement or block
The entry expression is evaluated only once, when the for statement
is entered. Once the entry expression is evaluated, the Boolean expression
is evaluated, and, if the result is true, the embedded statement or
block is evaluated, followed by the continuation expression. Then, the
test–evaluate loop continues until the Boolean expression eventually
evaluates to false.