如何在函数中定义类的静态成员？

Question

我在这里：

class X {

public:
    static int shared_arr[];
    static void alloc_and_init() {

        // Since any static variables defined in the function are allocated some space.
        // So can I define X::shared_arr here (using the space the static variable for X::shared_arr)? 
        // I think it would be a convenient way to make an approach of some basic memory allocation and initialization.
    }

};

Answer 1

不，你必须在一个cpp文件中定义它＆amp;在任何功能之外。

int X::shared_arr[MAX_SIZE] = {0};
^^^

请注意，您缺少数组类型。