1）创建派生类对象时，先调用基类的构造函数，再调用派生类的构造函数。
2）销毁派生类对象时，先调用派生类的析构函数，再调用基类的析构函数。如果手工调用派生类的析构函数，也会调用基类的析构函数。
3）创建派生类对象时只会申请一次内存，派生类对象包含了基类对象的内存空间，this指针相同的。
4）创建派生类对象时，先初始化基类对象，再初始化派生类对象。
5）在VS中，用cl.exe可以查看类的内存模型。
6）对派生类对象用sizeof得到的是基类所有成员（包括私有成员）+派生类对象所有成员的大小。
7）在C++中，不同继承方式的访问权限只是语法上的处理。
8）对派生类对象用memset()会清空基类私有成员。
9）用指针可以访问到基类中的私有成员（内存对齐）。
本文作者：jinganglang567
本文链接：https://www.cnblogs.com/tgfoven/p/17132665.html
版权声明：本作品采用知识共享署名-非商业性使用-禁止演绎 2.5 中国大陆许可协议进行许可。
作曲 : Steven D Cooper
Seems like nowadays, everybody lacks patience
Want it right now, always sick of this waiting
Hating on anyone, stuck in the process
For God sakes, how long will you waste, it's non sense
Telling you to give up on the dream, but who
Are they to throw away, all their faith in you
No way you're gonna fade, let them say and shoo
Get away, 'cause what they say don't have weight with you
You keep moving on, write that, do a song
Right track, you belong, fight back, prove them wrong
Yeah, just keep on, keeping on
Yeah, 'cause this track you be on
Right there's gotta lot of potential
So never give up, just sharpen your pencil
Close out all the negative talk
Put on those old shoes and choose where you walk
When you fall, stand up
And when you break, stand tough
And when they say, you can't
You say I can, I can
When you fall, stand up
And when you break, stand tough
And when they say, you can't
You say I can, I can
Don't lose faith, 'cause the minute you break
Is the minute you wake, with a million mistakes
And a million regrets that, you'll never get back
The time that you set back, to please other friends that
Tell you that you can't be what you wanna be
There's a world out there go and see what you wanna see
I've been there, I can relate
So let this song tell ya that it's never too late
Wide awake, and I see more than ever
That people are quick to give up on their endeavors
Never really try 'cause they're scared of failure
So, allow me to be the first to tell ya'
I've failed more times than I've succeeded
In the end, exactly what I needed
To allow me to learn the right steps
So I'd never go back, and I never regret
When you fall, stand up
And when you break, stand tough
And when they say, you can't
You say I can, I can
When you fall, stand up
And when you break, stand tough
And when they say, you can't
You say I can, I can
A lot of dreams get left at the wayside
And I can feel their death in the baseline
'Cause of something' someone once said
At once dead,
Don't let them stop you in your tracks, at once dead
Say to yourself, I'ma be stronger than
Stay up late everyday working harder than
Keep my head focused, stick to the plan
They say I can't but I say I can
When you fall, stand up
And when you break, stand tough
And when they say, you can't
You say I can, I can
When you fall, stand up
And when you break, stand tough
And when they say, you can't
You say I can, I can
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