Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
LEVEL NUMBERS:
The COBOL makes use of the level number concept to explain the hierarchical data structure.
A level number is a 2 digit number. The permitted level numbers are 01 - 49, 66, 77 and 88.
All the variables are declared in the working-storage section by using appropriate level numbers.
The elementary data item can acquire either 01 or 77 as its level number. In the COBOL a division is made between the elementary and group data items. A few elementary data may be joint to form a group.
For illustration, the DAY, MONTH & YEAR may be 3 elementary data items. These may be joint to form a group data named DATE. The association may be shown pictorially as shown below:
It may be noted that the memory space referred to by the DATE is the combined memory space for DAY, MONTH &YEAR. The benefits of such a grouping are very clear. The programmer can now refer to the individual elementary items DAY, MONTH, YEAR or the group item DATE. An elementary data item is however the one which the programmer would always like to refer to as an entire and not in parts.
Rules for apply for the condition name: The rules below apply for the condition name. (i) The Condition names should be explained at level 88. The level number starts in ma
IF ... ELSE STATEMENT: We are familiar with an easy form of the IF statement. The common form of the IF statement is as shown below: Each of the statement-1 and statem
MULTIPLY VERB: The Multiply Verb causes one or more multiplicands to be multiplied by the multiplier and to store the products. The form of the MULTIPLY verb is as shown be
Example of Nested if statement: Illustration: Consider the following sentence The nested IF sentence holds two IFs and one ELSE. The IF-ELSE couple has been marke
GO TO, STOP RUN: The GO TO verb is used to completely transfer the control to elsewhere in the program. Its form is as shown below: GO TO procedure-name As a result o
INDEXED SEQUENTIAL FILES: In the indexed sequential files which are also known as indexed files, the records are stored in the sequence order generally in ascending order. In
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
CLOSE statement: The simplified syntax of the CLOSE statement is as shown below: CLOSE file-name-1 [WITH LOCK ] [ , file-
Object-Computer - Configuration section: The computer name specifies a specific computer on which the object program is to be executed. The MEMORY SIZE is used to show 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
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd