Function that returns the size of a file in bytes in C

kalamaraki · 01-07-2007, 11:05 AM

Hello everybody!

Does anyone know if there is a function in C that returns the size of a file in bytes? Is this function included in stdlib? I want to write programs that read and write in files and if they are asked to write/read in a space outside the file range, that request should be rejected.

Thanks in advance.

raskin · 01-07-2007, 11:11 AM

man 2 stat
It is in libc.
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
The stat() and fstat() calls conform to SVr4, SVID, POSIX, X/OPEN, 4.3BSD. The lstat() call conforms to 4.3BSD and SVr4.

kalamaraki · 01-07-2007, 11:22 AM

Thanks for the quick reply