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COMPUTE VERB:
The COMPUTE verb is very powerful. All the evaluations performed by the other 4 verbs can also be completed easily by using the COMPUTE verb. Its normal format is:
COMPUTE identifier-1 ROUNDED , identifier-2 ROUNDED ...
= arithmetic-expression ; ON SIZE ERROR imperative-statement
The COMPUTE Verb statement has the following meaning. During the execution of the arithmetic expression on the right side of the equal sign is computed and the value is then moved to the identifiers(s) on the left-hand side. If any identifier on the left side of the equal sign is a numeric-edited item, then the editing takes place when the value of the expression is moved to the said identifier. The identifiers on the left side of the equal sign (=) should be numeric or numeric-edited elementary items. The right-hand side should be an arithmetic expression. They can also be an identifier (only numeric elementary items), a numeric literal or can specify a computation including two or more such identifiers and/or literals. The arithmetic expression has always a numeric value.
RELATIVE FILES: The Files that are stored on a direct access storage medium like magnetic disk are frequently known as direct access files. The COBOL supports three different
Example of condition names: The illustration below is of the use of the condition names 77 MARITAL-STATUS PIC 9 88 SINGLE VALUE IS ZERO 88 MA
VALUE CLAUSE: The value clause defines the preliminary value of the data item. Normally initialization will be completed just before the first statement in the procedure di
Structure of a COBOL Program: Every COBOL program should have the 4 divisions in the order in which they are specified below: 1. Identification division 2. Environment D
Format for COBOL Programs: The COBOL is a high-level language. Therefore, a COBOL program can be executed on a computer for which a COBOL compiler exists. The compiler transla
Example of Special-names: Consider the illustration: Let the SPECIAL-NAMES paragraph be as shown: SPECIAL-NAMES. CHANNEL 1 IS PAGE-TOP. The Channel is related with the t
PROGRAM FOR COMPUTE VERB: We have to write an easy program to elaborate the COMPUTE verb. Identification division. Program- id. compverb. Environment division. Da
Example of add verb: (a) ADD A TO B. This illustration represents that the value of A will be added to the value of B and the result will be stored in B. The alignment of
COMPOUND CONDITION: The two simple conditions can be connected by the logical operators AND or OR to form a compound condition (also termed as combined condition). When two co
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
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