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Upon successful completion, ftell() and ftello() shall return the current value of the file-position indicator for the stream measured in bytes from the beginning of the file. Otherwise, ftell () and ftello () shall return -1, and set errno to indicate the error.
3 sie 2010 · Is there a way to do what ftell () does (return the current position in the file) on a raw file descriptor instead of a FILE*? I think there ought to be, since you can seek on a raw file descriptor using lseek ().
The ftell() function obtains the current value of the file position indicator for the stream pointed to by stream. The rewind() function sets the file position indicator for the stream pointed to by stream to the beginning of the file. It is equivalent to: (void) fseek(stream, 0L, SEEK_SET)
The ftell () function obtains the current value of the file position indicator for the stream pointed to by stream. The rewind () function sets the file position indicator for the stream pointed to by stream to the beginning of the file. It is equivalent to: (void) fseek (stream, 0L, SEEK_SET)
Upon successful completion, ftell() and ftello() shall return the current value of the file-position indicator for the stream measured in bytes from the beginning of the file. Otherwise, ftell () and ftello () shall return -1, and set errno to indicate the error.
7 cze 2023 · ftell () in C is used to find out the position of the file pointer in the file with respect to starting of the file. Syntax. The syntax of ftell () is: long ftell (FILE * stream); Parameters. stream: It is the pointer to the file stream. Return Value. It returns a long integer value as the current position in the file.
The ftell() function obtains the current value of the file position indicator for the stream pointed to by stream. The rewind () function sets the file position indicator for the stream pointed to by stream to the beginning of the file.
