设置std::array的容量

回答: std::array的容量是固定的，由数组的大小决定。在初始化std::array对象时，需要指定数组的大小。例如，std::array<int, 5> arr; 创建了一个容量为5的std::array对象，其中可以容纳5个int类型的元素。\[1\]
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