Values of a data structure can be decomposed into individual data elements.
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Values in an array can have different data types.
A. 对
B. 错
We can scan all the elements in an array with the help of a for loop.
A. 对
B. 错
C checks the value of the index being used within the bound automatically.
A. 对
B. 错
促销的作用有（）
A. 传递产品销售信息
B. 创造需求，扩大销售
C. 突出产品特色，增强市场竞争力
D. 反馈信息，提高经济效益
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