Any Questions?

Any Questions?

Agenda

• Moving Data

• Selection Statements

• System Date

• Indicators in Display files

Moving Data

Move Statement

MOVE Identifier/Variable or Literal/Constant

TO (Indentifier/Variable)s

Numeric Moves

Sending Field Receiving Field Okay?Numeric Numeric

– Field sizes

Numeric Alphanumeric– Decimal places– Packed fields

Numeric Group Item

Alphanumeric Moves

Sending Field Receiving Field Okay?Alphanumeric Numeric

– Decimal Places– Packed fields

Alphanumeric Alphanumeric– Field sizes

Alphanumeric Group Item

Zero Moves

Sending Field Receiving Field Okay?

Zeros Numeric

Zeros Alphanumerics

Zeros Group Item

Spaces Moves

Sending Field Receiving Field Okay?

Spaces Numeric

Spaces Alphanumerics

Spaces Group Items

MOVE numeric TO numeric.

Field A PIC 9(3) Field B PIC 9(3)

100

Field A PIC 9(3) Field B PIC 9(4)

100

Field APIC 9(3) Field B PIC 9(2)

100

MOVE numeric TO numeric.

Field A PIC 9(3)V99 Field B PIC 99V9

100.03

Field A PIC 9(3)V99 Field B PIC 9(4)V999

100.03

Field A PIC 9(3)V99 Field B PIC 9(3)

100.03

MOVE numeric TO alphanumeric.

Field A PIC 9(3) Field B PIC X(3)

100

Field A PIC 9(3) Field B PIC X(4)

100

Field A PIC 9(3) Field B PIC X(2)

100

MOVE numeric TO alphanumeric.

Field A PIC 9(3)V99 Field B PIC X(3)

100.03

MOVE numeric TO group item

Field A PIC 9(3) Field B.

Field C PIC 99.

Field D PIC 9.

Field AField B Field C Field D

124

MOVE numeric TO group item

Field A PIC 9(3) Field B.

Field C PIC 99.

Field D PIC 99.

Field AField B Field C Field D

124

MOVE numeric TO group item

Field A PIC 9(3) Field B.

Field C PIC 9.

Field D PIC 9.

Field AField B Field C Field D

124

MOVE numeric TO group item

Field A PIC 9(3) Field B.

Field C PIC XX.

Field D PIC X.

Field AField B Field C Field D

124

MOVE numeric TO group item

Field A PIC 9(3) Field B.

Field C PIC XX.

Field D PIC XX.

Field AField B Field C Field D

124

MOVE numeric TO group item

Field A PIC 9(3) Field B.

Field C PIC X.

Field D PIC X.

Field AField B Field C Field D

124

MOVE alphanum TO alphanum.

Field APIC X(3) Field B PIC X(3)

CJM

Field A PIC X(3) Field B PIC X(4)

CJM

Field APIC X(3) Field B PIC X(2)

CJM

MOVE alphanum TO group item

Field A PIC X(3) Field B.

Field C PIC XX.

Field D PIC X.

Field AField B Field C Field D

CJM

MOVE alphanum TO group item

Field A PIC X(3) Field B.

Field C PIC XX.

Field D PIC XX.

Field AField B Field C Field D

CJM

MOVE alphanum TO group item

Field A PIC X(3) Field B.

Field C PIC X.

Field D PIC X.

Field AField B Field C Field D

CJM

MOVE alphanum TO numeric.

Field APIC X(3) Field B PIC 9(3)

ABC

MOVE zeros TO numeric.

Field B PIC 9(3)

Field BPIC 9(4)V99

MOVE zeros TO alphanumeric.

Field B PIC X(3)

Field BPIC X(1)

MOVE zero TO group item

Field B.

Field C PIC 99.

Field D PIC 9.

Field BField C Field D

MOVE zeros TO group item

Field B.

Field C PIC XX.

Field D PIC XX.

Field BField C Field D

MOVE spaces TO numeric.

Field B PIC 9(3)

Field BPIC 9(4)V99

Note: This is not supposed to work!

MOVE spaces TO alphanumeric.

Field B PIC X(3)

Field BPIC X(1)

MOVE spaces TO group item

Field B.

Field C PIC 99.

Field D PIC 9.

Field BField C Field D

Note: this is not supposed to work!

MOVE spaces TO group item

Field B.

Field C PIC XX.

Field D PIC XX.

Field BField C Field D

On your own, figure out how Group Item to Group Item and Group Item to Alphanumeric

work!

Selection Statements

Sorting on the iSeriesEBCDIC Sort

1. Blanks

2. Special Characters

3. Lower Case Letters

4. Upper Case Letters

5. Numbers

Selection

Condition?

Statement2 Statement1

Selection

IF Condition THEN

Statement(s)

ELSE

Statement(s)

END-IF

If-Then-ElseA = 10 B = 20

If (A > B) THENMOVE B TO A.

If-Then-ElseA = 10 B = 20

If A > B THENMOVE B TO A

ELSEMOVE A TO B.

If-Then-ElseA = 10 B = 20 C = 30 D = 40

If A < B THENIF A > C THEN

MOVE A TO CELSE

MOVE C TO AEND-IF

ELSEMOVE A TO B

END-IF.

Sign Test

A = 10 B = -10

If A IS NEGATIVE IF A IS POSITIVE

MOVE B TO A MOVE B TO A

ELSE ELSE

MOVE A TO B. MOVE A TO B.

Numeric Test

A = 10 B = -10

If A IS NUMERIC

ADD A TO B.

Alphabetic Test

C = ‘CJ’ D = ‘Christy’

If C is ALPHABETIC THEN

MOVE C TO OLDER-SISTER

ELSE

MOVE D TO OLDER-SISTER

END-IF

Alphabetic-Upper Test

C = ‘CJ’ D = ‘Christy’

If C is ALPHABETIC-UPPER THEN

MOVE C TO OLDER-SISTER

ELSE

MOVE D TO OLDER-SISTER

END-IF

Alphabetic-Lower Test

C = ‘CJ’ D = ‘Christy’

If D is ALPHABETIC-LOWER THEN

MOVE D TO OLDER-SISTER

ELSE

MOVE C TO OLDER-SISTER

END-IF

AND

FIELDA FIELDB Result

TRUE TRUE TRUE

TRUE FALSE FALSE

FALSE TRUE FALSE

FALSE FALSE FALSE

OR

FIELDA FIELDB Result

TRUE TRUE TRUE

TRUE FALSE TRUE

FALSE TRUE TRUE

FALSE FALSE FALSE

AND/OR Order of Operations

• Brackets First

• ANDs (From Left to Right)

• ORs (From Left to Right)

ANDs/ORs

A = 10 B = -10 C = 20

If (A<B) OR (B<C) AND (A<C) THEN

MOVE A TO C

ELSE

MOVE A TO B

END-IF

ANDs/ORs

A = 10 B = -10 C = 20

If ((A<B) OR (B<C)) AND (A<C) THEN

MOVE A TO C

ELSE

MOVE A TO B

END-IF

Case Statements

IF-THEN-ELSE StatementsIF MARKS >= 80 THEN

MOVE ‘A’ TO GRADE

ELSE

IF MARKS >= 70 THEN

MOVE ‘B’ TO GRADE

ELSE

IF MARKS >= 60 THEN

MOVE ‘C’ TO GRADE

ELSE

IF MARKS >= 55 THEN

MOVE ‘D’ TO GRADE

ELSE

MOVE ‘F’ TO GRADE

END-IF

END-IF

END-IF

ENDIF.

CASE StatementsEVALUATE TRUE

WHEN MARKS >= 80 MOVE ‘A’ TO GRADE

WHEN MARKS >= 70 AND MARKS < 80 MOVE ‘B’ TO GRADE

WHEN MARKS >= 60 AND MARKS < 70 MOVE ‘C’ TO GRADE

WHEN MARKS >= 55 AND MARKS < 60 MOVE ‘D’ TO GRADE

WHEN OTHER MOVE ‘F’ TO GRADE

END-EVALUATE.

CASE StatementsEVALUATE GRADE

WHEN ‘A’ DISPLAY ‘WONDERFUL!!!!’

WHEN ‘B’ DISPLAY ‘GREAT!!!’

WHEN ‘C’ DISPLAY ‘NEED ANY HELP?’

WHEN ‘D’ DISPLAY ‘COME AND SEE ME!’

WHEN ‘F’ DISPLAY ‘SEE YOU NEXT SEMESTER’

WHEN OTHER DISPLAY ‘WE HAVE A PROBLEM!’

END-EVALUATE.

Problem

ANNAME is a 20 character field in the file, ANMPF that stores an animal name.

ANMPF is a Physical file that contains a record for each of animals clients at the Seneca Vet Clinic.

You are required to write a COBOL program that selects all of the animals listed in ANMPF that start with a C.

What COBOL statement would select all of the animals names that start with the letter ‘C’.

System Date

• Function current-date

• Function convert-date-time

Indicators in Display Files

Option Indicators in COBOL

• Binary Values• Working Storage Definition example 01 ws-indicator-list.

05 IN88 INDICATOR 88 PIC 1 value B’0’.

• Passed to display files in the write statementWrite Display-record

format is ‘RECORD1’indicators are ws-indicator-list.

Example – Indicator 90 displays the message, Employee Name is invalid

Working Storage.01 ws-indicators.

05 IN90 INDICATOR 90 pic 1.

Procedure Division.

If scr-employee-name is equal to spaces move b’1’ to IN90 else

move b’0’ to IN90 end-if.

Response Indicators in COBOL

• Stored as binary values in the display file and passed as PIC X(2) via the control Area.

Select Display-file assign to workstation-dspfile-si organization is transaction control area is ws-control.Working Storage Section.01 ws-control. 05 ws-function-key pic x(2).

Example – check to see if function key 3 was pressed.

Select Display-file assign to workstation-dspfile-si organization is transaction control area is ws-control.Working Storage Section.01 ws-control. 05 ws-function-key pic x(2).

Procedure Division.

if ws-function-key = ’03’ ….. end-if.

Display file ‘Both’ Fields

• Input and Output buffers

• REDEFINES clause– Different data specifications for same memory

location

• Screens with both fields need an input and an output buffer.