C++：继承访问属性（public/protected/private）

 

https://www.cnblogs.com/duwenxing/p/7476469.html

•总结

父类中的访问属性	继承方式	子类中的访问属性
private	public/protected/private	不允许访问
public	public	public
public	protected	protected
public	private	private
protected	public	protected
protected	protected	protected
protected	private	private