嵌套类中的static

这些东西我觉得只能算是c++的细节吧，但是有些还是得了解的。

#include <iostream>
using namespace std;

class staticDemo {
public:
    class inner {
        static int i;
    public:
        void print() const {
            cout << "i: " << i << endl;
        }
    };
};

int staticDemo::inner::i = 1000;
 
int main() {
    staticDemo::inner in;
    in.print();
}