C.7. while Repetition Statement
As an example of Java’s while repetition statement, consider a program segment that finds the first power of 3 larger than 100. Suppose that the int
variable product
is initialized to 3. After the following while
statement executes, product
contains the result:
while ( product <= 100 ) product = 3 * product;
When this while
statement begins execution, the value of variable product
is 3. Each iteration of the while
statement multiplies product
by 3, so product
takes on the values 9, 27, 81 and 243 successively. When variable product
becomes 243, the while
-statement condition—product <= 100—becomes false. This terminates the repetition, so the final value of product is 243. At this ...
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