• What are the major differences between C and C++?
  • What are the differences between new and malloc?
  • What is the difference between delete and delete[]?
  • What are the differences between a struct in C and in C++?
  • What are the advantages/disadvantages of using #define?
  • What are the advantages/disadvantages of using inline and const?
• What is the difference between a pointer and a reference?
  • When would you use a pointer? A reference?
  • What does it mean to take the address of a reference?
• What does it mean to declare a function or variable as static?
• What is the order of initalization for data?
• What is name mangling/name decoration?
  • What kind of problems does name mangling cause?
  • How do you work around them?
• What is a class?
  • What are the differences between a struct and a class in C++?
  • What is the difference between public, private, and protected access?
  • For class CFoo { }; what default methods will the compiler generate for you>?
  • How can you force the compiler to not generate them?
  • What is the purpose of a constructor? Destructor?
  • What is a constructor initializer list?
  • When must you use a constructor initializer list?
  • What is a:
    • Constructor?
    • Destructor?
    • Default constructor?
    • Copy constructor?
    • Conversion constructor?
  • What does it mean to declare a...
    • member function as virtual?
    • member function as static?
    • member function as static?
    • member variable as static?
    • destructor as static?
  • Can you explain the term "resource acquisition is initialization?"
  • What is a "pure virtual" member function?
  • What is the difference between public, private, and protected inheritance?
  • What is virtual inheritance?
  • What is placement new?
  • What is the difference between operator new and the new operator?
• What is exception handling?
  • Explain what happens when an exception is thrown in C++.
  • What happens if an exception is not caught?
  • What happens if an exception is throws from an object's constructor?
  • What happens if an exception is throws from an object's destructor?
  • What are the costs and benefits of using exceptions?
  • When would you choose to return an error code rather than throw an exception?
• What is a template?
• What is partial specialization or template specialization?
• How can you force instantiation of a template?
• What is an iterator?
• What is an algorithm (in terms of the STL/C++ standard library)?
• What is std::auto_ptr?
• What is wrong with this statement? std::auto_ptr ptr(new char[10]);
• It is possible to build a C++ compiler on top of a C compiler. How would you do this? (Note: I've only asked this question once; and yes, he understood that I was asking him how cfront was put together. We hired him.)

暂时发布问题，大家集思广益，争取把每个问题讨论的充分一点，我会在最快的时间给我出的答案：）

(1)message 参数。 Message 参数是我最喜欢的一个参数，它能够在编译信息输出窗
口中输出相应的信息，这对于源代码信息的控制是非常重要的。其使用方法为：
#Pragma message(“消息文本”)
当编译器遇到这条指令时就在编译输出窗口中将消息文本打印出来。
当我们在程序中定义了许多宏来控制源代码版本的时候，我们自己有可能都会忘记有没有正确的设置这些宏，此时我们可以用这条指令在编译的时候就进行检查。假设我们希望判断自己有没有在源代码的什么地方定义了_X86这个宏可以用下面的方法
#ifdef _X86
#Pragma message(“_X86 macro activated!”)
#endif
当我们定义了_X86这个宏以后，应用程序在编译时就会在编译输出窗口里显示“_
X86 macro activated!”。我们就不会因为不记得自己定义的一些特定的宏而抓耳挠腮了
。

(2)另一个使用得比较多的pragma参数是code_seg。格式如：
#pragma code_seg( ["section-name"[,"section-class"] ] )
它能够设置程序中函数代码存放的代码段，当我们开发驱动程序的时候就会使用到它。

(3)#pragma once (比较常用）
只要在头文件的最开始加入这条指令就能够保证头文件被编译一次，这条指令实际上在VC6中就已经有了，但是考虑到兼容性并没有太多的使用它。

(4)#pragma hdrstop表示预编译头文件到此为止，后面的头文件不进行预编译。BCB可以预编译头文件以加快链接的速度，但如果所有头文件都进行预编译又可能占太多磁盘空间，所以使用这个选项排除一些头文件。
有时单元之间有依赖关系，比如单元A依赖单元B，所以单元B要先于单元A编译。你可以用#pragma startup指定编译优先级，如果使用了#pragma package(smart_init) ，BCB就会根据优先级的大小先后编译。

(5)#pragma resource "*.dfm"表示把*.dfm文件中的资源加入工程。*.dfm中包括窗体
外观的定义。

(6)#pragma warning( disable : 4507 34; once : 4385; error : 164 )
等价于：
#pragma warning(disable:4507 34) // 不显示4507和34号警告信息
#pragma warning(once:4385) // 4385号警告信息仅报告一次
#pragma warning(error:164) // 把164号警告信息作为一个错误。
同时这个pragma warning 也支持如下格式：
#pragma warning( push [ ,n ] )
#pragma warning( pop )
这里n代表一个警告等级(1---4)。
#pragma warning( push )保存所有警告信息的现有的警告状态。
#pragma warning( push, n)保存所有警告信息的现有的警告状态，并且把全局警告
等级设定为n。
#pragma warning( pop )向栈中弹出最后一个警告信息，在入栈和出栈之间所作的
一切改动取消。例如：
#pragma warning( push )
#pragma warning( disable : 4705 )
#pragma warning( disable : 4706 )
#pragma warning( disable : 4707 )
//.......
#pragma warning( pop )
在这段代码的最后，重新保存所有的警告信息(包括4705，4706和4707)。
（7）pragma comment(...)
该指令将一个注释记录放入一个对象文件或可执行文件中。
常用的lib关键字，可以帮我们连入一个库文件。