Method MyString

week11/examples/example2/mystring.hpp:11–17

    char * characters;
  public:
    MyString(int buf_len = 64, const char * data = NULL)
    {
        std::cout << "Constructor(int, char*)" << std::endl;
        this->buf_len = 0;
        this->characters = NULL;
        create(buf_len, data);
    }
    MyString(const MyString & ms)
    {
        std::cout << "Constructor(MyString&)" << std::endl;