Control Statements

Control Statements:

1. IF…ENDIF.
2. IF….ELSE…ENDIF.
3. IF….ELSEIF…ENDIF.
4. DO…ENDDO.
5. WHILE…ENDWHILE.
6. CASE…ENDCASE.

PARAMETERS : P_AGE(3) TYPE N.

FI P_AGE >= 18.

WRITE: / ‘ELIGIBLE’.

ENDIF.

DO N TIMES.

….

…

….

ENDDO.

Inside DO…ENDDO. The system field, SY-INDEX contain current loop index.

Parameters P_NAME TYPE I.

DATA RES TYPE I.

DO 10 TIMES.

RES = P_NUM * SY-INDEX.

WRITE: / P_NUM, ‘*’, SY-INDEX, ‘=’, RES.

ENDDO.

WHILE…ENDWHILE.

WHILE (condition)

…

…..

…

ENDWHILE.

PARAMETER P_NUM TYPE I.

WHILE P_NUM <> 0.

P_NUM = P_NUM -1.

P_NUM = 7.

CONTINUE.

ENDIF.

WRITE : /P_NUM.

ENDWHILE.

CONTINUE skips the loop processing.

EXIT cancels the innermost loop.

CASE…ENDCASE.

CASE variable

WHEN ‘ ‘

….

…

WHEN ‘ ’

…

….

WHEN OTHERS

….

…

ENDCASE.

PARAMETERS P_COLOR TYPE I.

CASE P_COLOR.

WHEN ‘1’.

WRITE: /’RED’.

WHEN’2’/

WRITE:/’GREEEN’.

WHEN OTHERS.

WRITE:/’INVALID COLOR’.

ENDCASE.