--%>
Assignment Help - homework help

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 : Purpose of exec functions Specify the

    Specify the purpose of exec functions?

    		•
  • Q : Default function arguments C++ allows

    C++ allows us to call

    		•
  • Q : Define Heap Abstractions Heap

    Heap Abstractions: The class abstractions that we discussed above are obtained by abstracting each field of base type. The number of instances of that particular class still needs to be bounded; this results in an under-approximation that is still use

    		•
  • Q : Explain Cast Cast : Where Java does not

    Cast: Where Java does not allow the utilization of a source value of one type, it is essential to use a cast to force the compiler to admit the use for the target type. The care must be taken with casting values of primitive types, as this frequently

    		•
  • Q : What is Bit Bit : It is a binary digit

    Bit: It is a binary digit that can take on two possible values: 0 and 1. The bits are basic building block of both data and programs. Computers regularly shift data around in multiples of eight-bit units (that is, bytes for the sake of effectiveness).

    		•
  • Q : Define the term Array Define the term

    Define the term Array: It is a fixed-size object which can hold zero (0) or more items of the array's declared type.

    		•
  • Q : Define the term Sound card Define the

    Define the term Sound card: It is a hardware device employed to turn digital data into sound.

    		•
  • Q : CPU programming When a process enters

    When a process enters the CPU, your program must now "fork"and "exe" a stand alone child process. You MUST use "glxgears" for the child process.                            When a context switch occurs

    		•
  • Q : What is Discrete simulation Discrete

    Discrete simulation: In a discrete simulation, the time passes at an irregular rate which is determined by the primary events of interest in simulation.

    		•
  • Q : Explain the term XForms Explain the

    Explain the term XForms.

    		•