std::ftell (3) - Linux Manuals

std::ftell: std::ftell

NAME

std::ftell - std::ftell

Synopsis

Defined in header <cstdio>
long ftell( std::FILE* stream );

Returns the current value of the file position indicator for the file stream stream.
If the stream is open in binary mode, the value obtained by this function is the number of bytes from the beginning of the file.
If the stream is open in text mode, the value returned by this function is unspecified and is only meaningful as the input to std::fseek

Parameters

stream - file stream to examine

Return value

File position indicator on success or -1L if failure occurs. Also sets errno on failure.

Example

 This section is incomplete
 Reason: no example