std::fsetpos (3) Linux Manual Page

std::fsetpos – std::fsetpos

Synopsis

Defined in header<cstdio>

    int fsetpos(std::FILE *stream, const std::fpos_t *pos);

Sets the file position indicator and the multibyte parsing state (if any) for the C file stream stream according to the value pointed to by pos.
Besides establishing new parse state and position, a call to this function undoes the effects of std::ungetc and clears the end-of-file state, if it is set.
If a read or write error occurs, the error indicator (std::ferror)for the stream is set.

Parameters

stream – file stream to modify
pos – pointer to a fpos_t object obtained from std::fgetpos called on a stream associated with the same file

Return value

0 upon success, nonzero value otherwise. Also, sets errno on failure.

Notes

After seeking to a non-end position in a wide stream, the next call to any output function may render the remainder of the file undefined, e.g. by outputting a multibyte sequence of a different length.

See also

        gets the file position indicator
fgetpos (function)
        returns the current file position indicator
ftell (function)
        moves the file position indicator to a specific location in a file
fseek (function)