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# ftell

ftell -- Tell file pointer read/write position

## Description

`int ftell`(int fp);

Returns the position of the file pointer referenced by fp; i.e., its offset into the file stream.

If an error occurs, returns false.

The file pointer must be valid, and must point to a file successfully opened by fopen() or popen().

See also fopen(), popen(), fseek() and rewind().

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