describe the meaning if rc!=E_OK&&rc!=E_FILE_OPEN in data driven test?

Answer 1

It is a conditional statement that checks whether the contents of a variable called "rc" (probably containing the return code of some file-related function call) is neither E_OK, nor E_FILE_OPEN.

Most probably, its meaning is to check if a file-related error has occurred - and not one caused by the fact that the file is already opened by another application (opened files cannot be deleted or renamed and cannot be written to, unless opened in a special mode).