4月20号 C++

class String

{
  
  

public:

    String(char *str)

    {                

            int length = strlen(str);

            _str = new char[length + 1];

            strcpy(_str, str);

            size = length;        

    }

    String(String &other):_str(new char(other.size))

    {
  
  

    }

    ~String()

    {
  
  

        if (NULL != _str)

        {
  
  

            delete[] _str;

        }

    }

private:

    char *_str;

    size_t size;

};