在C++中重载Subscript []运算符以设置类的大小(量词).

class MyClass {
public:
    MyClass(int size) : size(size) {
        data = new int[size];
    }

    ~MyClass() {
        delete[] data;
    }

    int& operator[](int index) {
        return data[index];
    }

    const int& operator[](int index) const {
        return data[index];
    }

private:
    int size;
    int* data;
};