题目内容
Generally, before accumulating values, the accumulator variable should be initialized to ____.
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In computer programming, data values used to signal either the start or end of a data series are called ____.
In Unix operating systems, the EOF mark is generated whenever the ____ keys are pressed simultaneously.
In IBM-compatible computers, the EOF mark is generated whenever the ____ keys are pressed simultaneously.
The ____ statement is similar to the break statement but applies only to loops created with while, do-while, and for statements.
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