COBOL: Interview questions

1. How to pass return code program to JCL ?.

ANS : MOVE 8 to RETURN-CODE.

RETURN-CODE is a registor.

2. Program 1 calls Program 2 and passes no data. Do we need to code Linkage section in

Program 2.

ANS : No need to code.

3. Variable 1 is defined in Working-storage section. Is the following statement true for variable 1.

SET ADDRESS OF variable 1 TO NULL.

ANS : Only linkage section variables has addressability. The statemnt will result in compilation

Erros.

  4. 01 WS-DATA.

        05 WS-CNTR PIC 9(2).

        05 WS-data1.

  10 WS-data2 occurs 1 to 99 times depending on WS-CNTR PIC X(10).

        05 WS-data3 PIC X(10).

     Procedure division.

         MOVE “DATA” TO ws-data3

         Display ws-data3.

         Stop run

     What will be result ?.

     ANS : We should first set a value to “WS-CNTR”. Otherwise ws-data3 will not be allocated.

5.

    PERFORM para-1 thru para5.

Display “Control is resuming”.

STOP RUN.

PARA1.

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Go to para4.

Para 2.

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Para 4.

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para 5.

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Will the control will go to “DISPLAY” statement.

ANS : Yes.