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:

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fd=open(filename, O_WRONLY | O_CREAT);

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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 !

Add O_TRUNC to "remove" the old file-content [truncate the file to 0 size].

--
Mats

thanks !