const char *与char * const的区别。C语言对文件读写的支持，FILE指针；文本文件和二进制文件的区别。用文本方式读写文件和以二进制方式读写文件的注意事项。C++对文件读写的支持，ofstream和ifstream的用法。Win32 SDK对文件读写的支持，CreateFile函数、WriteFile函数、ReadFile函数的使用；MFC对文件读写的支持，CFile类和CFileDialog的使用，文件过滤器的设置。win.ini文件和注册表的读写方式及相关知识点。-const char* and char* const distinction. C language support for reading and writing files, FILE pointer　differences between text files and binary files. Read and write text files and read and write in binary mode Notes document. C++ usage of file read and write support, ofstream and ifstream. MFC support for file reading and writing, CFile Class CFileDialog use file filter settings　supports, CreateFile function, WriteFile function, ReadFile function to read and write files in Win32 SDK. win.ini file and registry write methods and related knowledge.