GetFileSize(FileName)

GetFileSize returns the size of the file you specified.

Return Value:
The size of the file if everything was OK.
-1 in case of error and the _errno variable contains more details about the error.

Example:

f = "c:\\windows\\win.com" $
s = getfilesize(f$)
print("Size of ", f$, " is ", int(s)$)

Size of c:\windows\win.com is 22679