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Label Records / Disk Directory:
The most important information stored in the header label is what is termed as the file title. In the situation of magnetic-disk files the labels normally do not exist (there are lots of exceptions). As, more than one file is stored on a disk pack, the Input-Output control system also maintains a disk directory for all the files.
PROGRAM FOR ELECTRICITY BILL: An electricity company supplies electricity to 4 types of customers coded 1, 2, 3 & 4.The rate schedule for customers is shown in one table as
SUBTRACT VERB: The SUBTRACT verb is used to subtract one, or the sum of two or more numbers from one or more numbers and to store the result. The form of the SUBTRACT verb
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
Data Names and Identifiers: The Data name provides reference to the storage space in the memory where the real value is stored. This value takes part in the operation whene
FILE STATUS clause: This clause has been involved in the above syntax for completeness. The ORGANIZATION, REVERSE, ACCESS and STATUS clause can be specified in any order.
, (Comma) : A comma, whenever used in a picture, is considered as an insertion character and inserted wherever it become visible. There can be more than one comma in the pictu
ADD VERB: The ADD Verb can be used to find the sum of two or more numbers and to store the sum. The ADD verb takes any one of the two forms as shown below:
Evaluate is like a case statement & Evaluate stamenet can be used to replace nested Ifs. The difference b/w EVALUATE and case is that there is no 'break' is required for EVALUATE
RELATIONAL CONDITION: We know that a relational condition specifies a comparison between two operands and has the form. Operand-1 relational-operator operand-2
I uploaded a file from PC to Mainframe, variable LRCL 256. In my COBOL program I defined it as FD INPUT-FILE LABEL RECORDS ARE OMITTED BLOCK CONTAINS 0 RECORDING MODE
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