--%>

The COBOL ALTER statement

Task 3

Explain the effect of the following pictures:

05 FIELD-1 PIC Z(5)9.

05 FIELD-2 PIC £(5)9.99.

05 FIELD-3 PIC £**,***.99.

05 FIELD-4 PIC £££,££9.99DB.

05 FIELD-5 PIC ZZZZ9+.

by showing the output that will be produced if each if the following values is moved to each of the above data-items:

12345678

0.2566

-180

 

Task 4

There are many errors in the following COBOL source code. Identify the errors and rewrite the program so that it contains no errors:

IDENTIFICATION DIVISION

PROGRAMID. ERRORS-EXAMPLE.

DATA DIVISION

77 ITEM-DESC PIC X20.

77 ITEM COST PIC 999V99.

77 VAT 999V99.

77 TOTAL PIC 999V99.

PROCEDURE-DIVISION.

BILL-SEQ

MOVE 0 TO TOTAL.

         INPUT ITEM-DESC

         INPUT ITEM-COST.

INPUT-ITER.

         IF ITEM-COST = 0 GOTO INPUT-END

                  ADD ITEM-COST TO TOTAL

                  ACCEPT ITEM-DESC

                  ACCEPT ITEM-COST

                  GO TO INPUT ITER.

         VAT = 0.15 X TOTAL

         ADD VAT TO TOTAL

         DISPLAY OUTPUT TOTAL

         STOP-RUN.

BILL-END

 

Task 5

The following data structure appears in a COBOL program used by a bureau de change:

01 AUXILAIRY-ITEMS.

         05 AMOUNT-REQUIRED PIC999V99.

         05 SUCCESS-INDICATOR PIC 9.

         88 SUCCESS VALUE 1.

01 CURRENCY-TABLE.

         05 CURRENCY-RATE OCCURS 50 TIMES.

                  10 CURRENCY-CODE PIC AAA.

                  10 CURRENCY-RATE PIC 9(5)V9999.

         05 NUMBER-OF-CURRENCIES PIC 99.

Various foreign currencies are given ISO-standard three-letter codes (CURRENCY-CODE) and these are stored in the table (array) CURRENCY-TABLE together with the corresponding exchange rate (CURRENCY-RATE). The exchange rate is expressed as the amount of the foreign currency purchased for one pound (GBP).

The currencies are stored in elements 1 to NUMBER-OF-CURRENCIESof the table.

Assuming that all the relevant data items have been correctly initialised, write fragments of COBOL for each of the following tasks. In each case set the value of SUCCESS-INDICATOR such that the condition-name SUCCESS has the appropriate value after the operation.

i)       Update the exchange rate for "PLN" TO 4.637.

ii)      Look up the currency rate for "EUR" and calculate the (rounded) amount of this currency that corresponds to the value of AMOUNT-REQUIRED.

iii)      Add a new currency to the table with the value "KWD" and the exchange rate 0.4488.

 

Task 6

The COBOL ALTER statement was removed from the language after early versions. Briefly explain what the ALTER statement was and discuss why you think it was removed from the language.

   Related Questions in Programming Languages

  • Q : Define the term Writer class Writer

    Writer class: It is a sub class of the Writer abstract, stated in the java.io package. The writer classes translate output from Unicode to the host-dependent character set encoding.

  • Q : Define Bootstrap classes Bootstrap

    Bootstrap classes: The classes which make up the Java Platform Core Application Programming Interface (API), like those found in the java.lang, java.io and java.io packages.

  • Q : Examples for 8 -16 - 32 bit

    Normal 0 false false

  • Q : ArrayLists I. The Assignment The

    I. The Assignment The Bashemin Parking Garage contains a single lane that can hold up to ten cars.  Arriving cars enter the garage at the rear and are parked in the empty space nearest to the front.  Departing cars exit only from the front.  If a cu

  • Q : Advantage of wrapping database calls in

    What is the advantage of wrapping database calls in MTS transactions?

  • Q : Explain Do loop Do loop : This is one

    Do loop: This is one of Java's three control structures employed for looping. The other two are the for loop and while loop. A do loop comprises of a loop body and a Boolean expression. The condition is tested subsequent to the loop body has been fini

  • Q : Define Comment Comment : It is a piece

    Comment: It is a piece of text proposed for the human reader of a program. The compilers disregard their contents.

  • Q : Explain Imperative programming

    Imperative programming: The style of programming generally related with languages such as FORTRAN, C, Pascal and so forth. Imperative programming is differentiated from functional programming in that the previous is strongly tied to the idea of variab

  • Q : Describe File system File system : The

    File system: The operating system makes it possible to utilize space on a computer's disk drives by imposing a structured file system on disk storage. Each and every file system contains its own conventions for the manner in which the files are named,

  • Q : Define Delegation Delegation : The

    Delegation: The procedure by which an object passes on a message has received to a sub-ordinate object. When inheritance is not accessible in a programming language, then delegation is the most viable option for ignoring code duplication and promoting