| Programming Guide | |
Tests a field for no
int sm_is_no(int field_number);int sm_e_is_no(char *field_name, int element);int sm_i_is_no(char *field_name, int occurrence);int sm_n_is_no(char *field_name);int sm_o_is_no(int field_number, int occurrence);
field_name,field_number- The field to test.
element- The element in
field_nameto test.- occurrence
- The occurrence in the field to test.
- 1 True: The field's first character matches the first character of the
SM_NOentry in the message file.
sm_is_nocompares the first character of the data in the specified field or occurrence to the first letter of theSM_NOentry in the message file, ignoring case. A return of 0 (failure) does not indicate whether the failure occurred because the field contains the value ofSM_YESor for another reason. To test forSM_YES, use sm_is_yes.You can use this function with one-letter fields that specify the yes/no character edit. For these fields, users can enter only the values
SM_YESorSM_NO, or space (= SM_NO). Unlike other functions,sm_is_nodoes not ignore leading blanks.