Thread: open empty file

hey
im programming in c under linux , and i want to open a new EMPTY file , im using the "open" system call . this is my code:

Code:

 fd=open(filename, O_WRONLY | O_CREAT);

but this open me the old file (if there is such one) ... and i want to open a new empty one..

how can i do this ?
thanks !

thanks !