在具有其他整数成员变量的类中声明2D char数组与c++中的大小相同

class MyClass {
private:
    int member1;
    int member2;
    char** charArray;

public:
    MyClass(int m1, int m2) {
        member1 = m1;
        member2 = m2;
        charArray = new char*[member1];
        for (int i = 0; i < member1; i++) {
            charArray[i] = new char[member2];
        }
    }

    ~MyClass() {
        for (int i = 0; i < member1; i++) {
            delete[] charArray[i];
        }
        delete[] charArray;
    }
};