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difference between fdopen() and freopen()

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# 1  
Old 11-30-2002
Bug difference between fdopen() and freopen()
hi , I came acroos two functions fdopen() and freopen().
what is the difference between these two functions and where can they be used. Is it that fdopen() is used to write freopen().

Advance Thanks for your co-operation.

Smilie
# 2  
Old 12-02-2002
freopen is the same thing as an fclose followed by an fopen. You might use it if you had a list of list to loop through. To go the the next file, you would just freopen() it. That would close the current file and open the new file. It's ok to use freopen() even on the first file.

fdopen takes a file opened by a system call and wraps a FILE structure around it. The file stays opened, but now it looks like fopen() opened it. So now all of the standard c library stuff like fprintf() can be used on it.

You should be able to type "man fdopen" and "man freopen" to get man pages on these functions.
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