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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.
program- id.
environment division.
data division.
working-storage section.
01 n pic 9(2) value 0.
01 i pic 9(2) value 1.
01 stu-det.
02 stu-rec occurs 10 times.
03 name pic x(20).
03 mark pic 9(3).
01 key- in pic x value space.
procedure division.
p-1.
display(1 1) erase.
display(3 5) "Enter How many times".
accept n.
perform get-para n times.
move 1 to i.
perform disp-para n times.
stop run.
get-para.
accept name(i).
accept mark(i).
add 1 to i.
disp-para.
display name (i).
display mark (i).
accept key- in.
PICTURE specification: The size of a group item is equivalent to the total of the sizes of all the subordinate elementary items. The group item class is alphanumeric. The i
Introduction to COBOL: In the year 1959, a new language named the COBOL ( CO mmon B usiness O riented L anguage) was introduced remembering the business purpose application
Edit Characters for Numeric Data: The characters below can be used in the PICTURE clause to indicate the editing. Z * $ - + CR DB . , B O /
Picture Clause: The picture clause explains the general characteristics of an elementary data item. These characteristics are elaborated below: Class: In COBOL the
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
File Description for the Relative and Indexed Files: The FD entry for a relative or an indexed file is similar to that of a sequential file. Some compilers do not permit varia
REWRITE statement: The REWRITE statement is used to update the existing record in a disk file. The normal format is as shown below: REWRIE record-name [ FROM ide
STATEMENTS FOR SEQUENTIAL FILES: A basic operation on a file includes the reading and writing of its records. Whenever the file is sequential, there are three verbs for the
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
INPUT-OUTPUT SECTION: This section holds information regarding the files to be used in the program. There are 2 paragraphs in this section- FILE-CONTROL & I-O-CONTROL. The
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