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#include <stdio.h> long ftell(FILE *file); |
Returns the current file position for file. This is suitable for
a future call to fseek.
The file position, or -1 on error.
| ANSI/ISO C | C89; C99 |
| POSIX | 1003.2-1992; 1003.1-2001 |
long p = ftell(stdout); |