_CP_close is equivalent to the close BASIC statement.
int _CP_close(int expression)
The expression should be an integer file descriptor returned by the _CP_open call. This function returns -1 if an error occurs. The error code is contained in _CP_errno.
CPSTR * s = _CP_mkstr("myfile"); int f; _CP_open(&f,_CP_str_null,s); _CP_clearfile(f); _CP_close(f);