Cobol Tutorial

 
 
 

Basic Programming


String Programs

Includes external source file in current file Gross salary, deduction, net salary of employee Count character for no of times in input string Display triangle of numbers FILE Read Operation Add two numbers Generate sales report item wise IF-ELSE Clause Group wise stock summary Attendence Report of Employees SORTING Operation Add 2 or more operands and stores result Relative file - insertion,deletion,updation, print Divides one or more operands by another Fahrenheit into temperature - C = (5/9) * (f - 32) Use of Control Break clause Print employee detail Draws an ellipse or a circle Binary search using files Generating date and time Describe Functionality of table by using File

General Programs

Evaluate gender from user and print Display input number is prime or not Display on printer message entered by user Displays message entered by user on printer Merging two files in a single file Generate arithmetic operation - evaluate clause Print account report Use of Sign clause Create attendence sheet Displays on printer - divide operation quotient Binary search on student name, print roll number job appl checking candidate is eligible or not Read data from input file and move to output file

Mathematical Program

Print bill report Purchase and rebate amount payslip Example of string and unstring Describe Functionality of two dimension table Insert, delete, update, view in index file Display the pattern of square School management system Converting integer to its number of words Use of move clause for numeric values Use multiple array Inventory transactions Sort records of file Displays alphanumeric char on screen graphic mode Student details using relative file

Sorting Programs

Store content in file,record of field - other file Calculate Total percentage Classfor each student Edit character Display pattern of numbers in reverse pattern User input data and stores it in to the file Multiplication table Generate sales register Draw a line Use of Tables with INPUT clause Check student is pass or fail i/p result from user Calculate monthly sales amount -sequential access Sescribes how to use Sort technique Declares data to the compiler Input record into file using extend mode Print addition of two nos and sum is third or not Use of perform verbs Bank Report depending upon user choice Create result statement for given semester Search name from file display roll no of student Generating julian date

Clause

Describe Functionality of Relative File Use of evaluate clause Describe use of IF CONDITION and PRINT Calculate Total percentage Class for each student Displays alphanumeric character in graphics mode Reads in states until end of data Read student details from file - read operation Evaluates arithmetic expression - stores result Print presence report based on provided data Use of Inspect clause Check entered date is valid birth date or not Draws rectangle filled with one color Search perticular record Find age from accepted date from user Merge 2 files with students records

File Programs

Check two same condition name is allow or not Arithmetic operations add,sub,div and mul Display on Console a message entered by user Display message entered by user on console Generate student mark sheet using file r/w op Check if a number is a fibonacci or not Print mark sheet of a student with grades Use of Redefine clause Create marksheet of student Use of leading and trailing Sequential search Class condition Student detail management using indexed file

Search Programs

Enter value is alphabetic,numeric,alphanumeric Find yearly depreciation Unstring word Find smallest quotation for given item Write records reside in i/p file- show on screen Sum of series 1 + 1/4 + 1/9 Using sign test for numeric value Draw polygon Use of EVALUATE clause Count number of char Date manipulation Bubble sort DOS standard o/p device Create the index file
 

PROGRAM THAT CREATES A RELATIVE FILE.IT ALSO PERFORMS INSERTION,DELETION,UPDATION AND PRINTING ON IT

 
      IDENTIFICATION DIVISION.
        PROGRAM-ID. STUOPE.

       ENVIRONMENT DIVISION.
        INPUT-OUTPUT SECTION.
         FILE-CONTROL.
          SELECT FILE1 ASSIGN TO DISK
          ORGANIZATION IS RELATIVE
          ACCESS IS DYNAMIC
          RELATIVE KEY IS INROLL-NO.

       DATA DIVISION.
        FD FILE1
           VALUE OF FILE-ID IS \"STUDOP.DAT\".
          01 WRFILE.
            05 FROLL-NO PIC 9(2).
            05 FNAME    PIC X(10).
            05 FTOT     PIC 9(2).

        WORKING-STORAGE SECTION.

         01 INROLL-NO PIC 9(2).
         01 WISH   PIC X VALUE \"Y\".
         01 CONTI  PIC 9 VALUE 0.
         01 CHA-NAME PIC X VALUE \"N\".
         01 CHA-TOT  PIC X VALUE \"N\".
         01 EOF PIC X VALUE \"N\".
         01 SCODE  PIC 9.
             88 INSRT  VALUE 1.
             88 UPDT   VALUE 2.
             88 DELET  VALUE 3.
             88 PRNREC VALUE 4.

        PROCEDURE DIVISION.
          BEGIN.
                  OPEN I-O FILE1.
                MENU.

                PERFORM UNTIL WISH=\"N\" OR WISH=\"n\" OR CONTI=1

                 DISPLAY \"1.INSERT A NEW RECORD\"  
                 DISPLAY \"2.UPDATE AN EXISTING RECORD\"
                 DISPLAY \"3.DELETE A RECORD\"
                 DISPLAY \"4.DISPLAY THE SPECIFIED RECORD\"

             DISPLAY \"ENTER YOUR CHOICE(1,2,3 OR 4)=\"WITH NO ADVANCING
                 ACCEPT SCODE

                 PERFORM SELPARA

                 DISPLAY \"WANT TO CONTINUE?=\"WITH NO ADVANCING
                 ACCEPT WISH

               END-PERFORM.
               CLOSE FILE1.
               STOP RUN.

           SELPARA.
                 EVALUATE TRUE
                   WHEN INSRT 
                       PERFORM INS-PARA
                   WHEN UPDT 
                       PERFORM UPD-PARA
                  WHEN DELET
                       PERFORM DEL-PARA
                  WHEN PRNREC
                       PERFORM DISP-PARA
                  WHEN OTHER
                        DISPLAY \"ENTER A VALID CHOICE\"
                END-EVALUATE.

         INS-PARA.
                DISPLAY \"ENTER THE ROLL-NUMBER=\"WITH NO ADVANCING.
                ACCEPT INROLL-NO.

                MOVE INROLL-NO TO FROLL-NO.

                DISPLAY \"ENTER THE NAME=\"WITH NO ADVANCING.
                ACCEPT FNAME.

                DISPLAY \"ENTER THE TOTAL MARKS=\"WITH NO ADVANCING.
                ACCEPT FTOT.

                WRITE WRFILE
                   INVALID KEY DISPLAY \"ENTER A VALID ROLL NUMBER\"
                   MOVE 1 TO CONTI
                   GO TO MENU
                END-WRITE.

            UPD-PARA.

                 DISPLAY \"ENTER THE ROLL NO=\"WITH NO ADVANCING.
                 ACCEPT INROLL-NO.
                 MOVE INROLL-NO TO FROLL-NO.

                 READ FILE1.

            DISPLAY \"DO YOU WANT TO CHANGE NAME=?\"WITH NO ADVANCING.
                ACCEPT CHA-NAME.

                IF CHA-NAME=\"Y\" THEN
                   DISPLAY \"ENTER THE NEW NAME=\"WITH NO ADVANCING
                   ACCEPT FNAME
                END-IF.

           DISPLAY \"DO YOU WANT TO CHANGE MARKS?=\"WITH NO ADVANCING. 
                  ACCEPT CHA-TOT.

                IF CHA-TOT=\"Y\" THEN
                    DISPLAY \"ENTER THE TOTAL MARKS=\"WITH NO ADVANCING
                    ACCEPT FTOT
                END-IF.

                REWRITE WRFILE
                    INVALID KEY DISPLAY \"THE KEY ALREADY EXISTS\"
                    MOVE 1 TO CONTI
                    GO TO MENU
               END-REWRITE.

           DEL-PARA.
                 DISPLAY \"ENTER THE THE ROLL-NO=\"WITH NO ADVANCING.
                 ACCEPT INROLL-NO.

                 MOVE INROLL-NO TO FROLL-NO.
                 DELETE FILE1
                     INVALID KEY DISPLAY \"THE KEY DOES NOT EXIST\"
                     MOVE 1 TO CONTI
                     GO TO MENU
                END-DELETE.

            DISP-PARA.
                 DISPLAY \"ENTER THE ROLL-NO=\"WITH NO ADVANCING.
                 ACCEPT INROLL-NO.

                 MOVE INROLL-NO TO FROLL-NO.
                 READ FILE1       
                INVALID KEY DISPLAY \"THE KEY DOES NOT EXIST\"
                     MOVE 1 TO CONTI
                     GO TO MENU
                 END-READ.

                 DISPLAY  \"ROLL-NO::\"FROLL-NO.
                 DISPLAY  \"NAME ::::\"FNAME.
                 DISPLAY  \"TOTAL MARKS:::\"FTOT.

/*********************************************************************************************
                                       OUTPUT
**********************************************************************************************/
 NOTE:- THE FILE STUDINFO.DAT DOESNOT EXIST.WHEN IT IS RUN FOR THE FIRST TIME
        THE FIRST OPTION FOR INSERTION IS SELECTED AND RECORDS ARE ENTERED.


                 1.INSERT A NEW RECORD
                 2.UPDATE AN EXISTING RECORD
                 3.DELETE A RECORD
                 4.DISPLAY THE SPECIFIED RECORD

                 ENTER YOUR CHOICE(1,2,3 OR 4)=1

                 ENTER THE ROLL-NUMBER=1
                 ENTER THE NAME=SHAILY
                 ENTER THE TOTAL MARKS=35

                 WANT TO CONTINUE?=Y

                 1.INSERT A NEW RECORD
                 2.UPDATE AN EXISTING RECORD
                 3.DELETE A RECORD
                 4.DISPLAY THE SPECIFIED RECORD

                 ENTER YOUR CHOICE(1,2,3 OR 4)=1

                 ENTER THE ROLL-NUMBER=2
                 ENTER THE NAME=ASMITA
                 ENTER THE TOTAL MARKS=45

                 WANT TO CONTINUE?=Y

                 1.INSERT A NEW RECORD
                 2.UPDATE AN EXISTING RECORD
                 3.DELETE A RECORD
                 4.DISPLAY THE SPECIFIED RECORD

                 ENTER YOUR CHOICE(1,2,3 OR 4)=1

                 ENTER THE ROLL-NUMBER=2
                 ENTER THE NAME=ADITI
                 ENTER THE TOTAL MARKS=45

                 ENTER A VALID ROLL NUMBER


NOTE:-RECORDS ARE ENTERED IN THE FILE.

                 1.INSERT A NEW RECORD
                 2.UPDATE AN EXISTING RECORD
                 3.DELETE A RECORD
                 4.DISPLAY THE SPECIFIED RECORD

                 ENTER YOUR CHOICE(1,2,3 OR 4)=2

                 ENTER THE ROLL NUMBER=2     
                 DO YOU WANT TO CHANGE NAME?=Y
                 ENTER THE NEW NAME=SAM
                 DO YOU WANT TO CHANGE MARKS?=Y
                 ENTER THE MARKS=60

                 WANT TO CONTINUE?=N

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