Program for master file maintenance , COBOL Programming

Assignment Help:

PROGRAM FOR MASTER FILE MAINTENANCE:

We have to write a program to keep the stu-file for which a record has just 2 fields,viz., rno(Roll Number) and name(Student Name). Give the provisions to add, modify, delete the records in the file

identification division.

  program- id.

  environment division.

  input-output section.

  file-control.

    select stu- file assign to disk

    organization is indexed

    access mode is random

    record key is rno

    file status is fs.

  data division.

  file section.

  fd stu- file

    label records are standard

    value of file- id is "stu.dat".

  01 stu-rec.

    02 rno pic 9(3).

    02 name pic x(20).

working-storage section.

01 fs pic x(2) value spaces.

01 ans pic x value space.  

01 ch pic 9 value 0.

procedure division.  

open-para.

  open i-o stu-file.

  if fs = "30"

      open output stu-file

      close stu-file

      open i-o stu-file.

  p-1.

    display(1 1) erase.

    display(3 5) "Main Menu".

    display(5 5) "1 to Add".

    display(7 5) "2 to Modify".

    display(9 5) "3 to Delete".

    display(11 5) "4 to Exit".

    display(13 5) "Your Choice [1..4] : ".

    accept ch.

    if ch < 0 or ch > 4 go to p-1.

    go to add-para modi-para del-para exit-para

      depending on ch.

  add-para.

    display(1 1) erase.

    display(3 5) "Rno : ".

    accept rno.

    display(5 5) "Name : ".

    accept name.

    write stu-rec invalid key display(15 5) "Error!".

    display(20 5) "Continue Add Records [y/n] : ".

    accept ans.

    if ans = "y" go to add-para else go to p-1.

  modi-para.

    display(1 1) erase.

    display(3 5) "Enter Roll no to Modify".

    accept rno.

    read stu- file key is rno 

      invalid key display(13 5) "No Record Found"

            go to c-para.

    display(5 5) "Rno = " rno.

    display(7 5) "Name = " name.

    display(9 5) "Sure to Modify [y/n] : ".

    accept ans.

    if ans  = 'y'

      display(1 1) erase

      display(5 5) "Name : "

      accept name

            rewrite stu-rec.

  c-para.

    display(15 5) "Continue Modification [y/n] : ".

    accept ans.

    if ans = 'y' go to modi-para else go to p-1.

  del-para.

          display(1 1) erase.

    display(3 5) "Enter Roll no to Delete".

    accept rno.

    read stu- file key is rno 

    invalid key display(13 5) "No Record Found"

          go to c-para1.

  display(5 5) "Rno = " rno.

  display(7 5) "Name = " name.

  display(9 5) "Sure to Delete [y/n] : ".

  accept ans.

  if ans  = 'y'

    delete stu- file record.

c-para1.

  display(15 5) "Continue  Deletion  [y/n] : ".

  accept ans.

  if ans = 'y' go to del-para else go to p-1.

exit-para.

  close stu-file.

  stop run.


Related Discussions:- Program for master file maintenance

Program for move corresponding, PROGRAM FOR MOVE CORRESPONDING: We hav...

PROGRAM FOR MOVE CORRESPONDING: We have to write a simple program to demonstrate Move Corresponding. identification division.   program- id.   environment division.

Rounded option, ROUNDED OPTION: Let us consider the DATA DIVISION entr...

ROUNDED OPTION: Let us consider the DATA DIVISION entries which are as shown below: Now, subsequent to the execution of the statement ADD A B GIVING C, the C will hold

Example of constructing an arithmetic expression, Example of constructing a...

Example of constructing an arithmetic expression: An arithmetic expression may be proceeded by a + or - sign. These operations are known as unary + or unary - operators. Il

Evaluate statemant, single program how may when statement has used

single program how may when statement has used

Block contains and records contains clause, BLOCK CONTAINS CLAUSE: Int...

BLOCK CONTAINS CLAUSE: Integer -1 of the BLOCK CONTAINS clause indicates the block size either in terms of records or in terms of characters. For illustration, BLOCK CONTAINS

Program of occurs clause, OCCURS CLAUSE - PROGRAM: We have to write a ...

OCCURS CLAUSE - PROGRAM: We have to write a program to elaborate occurs clause. Get names and marks of the students and show them on the screen.   identification division.

Read statement, READ STATEMENT: The aim of this verb is to make availa...

READ STATEMENT: The aim of this verb is to make available the next logical record from the input file. It is important to note the meaning of the "next" logical record in the

Rewrite statement - indexed files, REWRITE STATEMENT: As in the situat...

REWRITE STATEMENT: As in the situation of a relative file, the REWRITE statement needs that the file should be opened in the I-O mode, and if the SEQENTIAL access mode is spec

Illustration of divide verb, Illustration of Divide verb: (a) DIVIDE 5...

Illustration of Divide verb: (a) DIVIDE 5 INTO A. If the value of A is 20, then after execution of this statement the value of A will be 4. The older value of A will be los

Subscript and index, What is the difference between subscript and index

What is the difference between subscript and index

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd