1. Exception Handling
有两个特点：
Traditional error handling
后两者有共同的缺点：不会调用析构函数，对象不能有效地清除。
用C++有几年了，对网上”C++ is dying”的论调不可能充耳不闻。is C++ dying or not? 轮不到自己去评论，引用某些人的观点：
C++ is dying, and it has nothing much to do with technology. Like everything in software, it is about the people. C++ is loosing good programmers. When good programmers are gone, C++ is dead.
用了C和C++这么久，对于二者的一些细节还真是不知道，难得今天有空儿，补一补。先来谈谈C standard library。
The C standard library is a now-standardized collection of header files and library routines used to implement common operations, such as input/output and string handling, in the C programming language. Unlike other languages such as COBOL, Fortran, and PL/I, C does not include builtin keywords for these tasks, so nearly all C programs rely on the standard library to function.