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嵌入式C语言中const的多种用法
有时候我们希望定义这样一种变量,它的值不能被改变,在整个作用域中都保持固定。 例如,用一个变量来表示班级的最大人数,或者表示缓冲区的大小。为了满足这一要求,可以使用const关键字对变量加以限定: 但我们通常采用第一种方式,不采用第二种方式。
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