http://blogs.msdn.com/b/xiangfan/archive/2008/10/16/protected-or-private.aspxAs the designer of base class, you may hesitate whether to use private or protect access control. Then, let's try the following examples: 1. Call protected member function #include &lt;cstdio&gt; class A { protected : void b() {printf( "Oops!\n" );en-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.msdn.com/b/xiangfan/archive/2008/10/16/protected-or-private.aspx#9686356Tue, 02 Jun 2009 21:05:01 GMT91d46819-8472-40ad-a661-2c78acb4018c:9686356 Van s House Protected or Private | Outdoor Ceiling Fans<p>PingBack from <a rel="nofollow" target="_new" href="http://outdoorceilingfansite.info/story.php?id=55066">http://outdoorceilingfansite.info/story.php?id=55066</a></p> <img src="http://blogs.msdn.com/aggbug.aspx?PostID=9686356" width="1" height="1">