open二进制问题 > 杂文

打开文件w,r, 与wb,rb的区别

与具体语言无关,与操作系统相关,以下来自ubuntu的man fopen的内容:

The mode string can also include the letter 'b' either as a last character or  as  a  character
between  the  characters in any of the two-character strings described above.  This is strictly
for compatibility with C89 and has no effect; the 'b' is ignored on all POSIX  conforming  sys‐
tems,  including  Linux.  (Other systems may treat text files and binary files differently, and
adding the 'b' may be a good idea if you do I/O to a binary file and expect that  your  program
may be ported to non-UNIX environments.)




The End