rename函数和fgets函数

zhuhefang2006

把你的测试程序贴出来，感觉你问题描述的不够清楚

zhuhefang2006

errno不等于0，并不是因为fgets()的时候出了问题
errno是因为前面的rename()出错的时候设置的

zhuhefang2006

apue上讲过
There are two rules to be aware of with respect to errno.
First, its value is never cleared by a routine if an error does not occur. Therefore, we should examine its value only when the return value from a function indicates that an error occurred.
Second, the value of errno is never set to 0 by any of the functions, and none of the constants defined in <errno.h> has a value of 0.

第一点讲的就是你的这种情况

[ 本帖最后由 zhuhefang2006 于 2009-3-12 14:04 编辑 ]