In function 'int main()':<br />
14:9: error: 'int MyClass::y' is private within this context<br />
   14 |   myObj.y = 50;  // 不允许 (y 是私有的)<br />
      |         ^<br />
8:9: note: declared private here<br />
    8 |     int y;   // 私有属性<br />
      |         ^<br />