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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.
Illustrations of the valid arithmetic expressions are:
Note that whenever the right-hand side of a COMPUTE verb is a single identifier or literal, then the effect is that of a MOVE statement.
Illustration:
COMPUTE A = B + C
has similar effect as that of the ADD B C GIVING A
COMPUTE F = 1.8 * C + 32
The value of the expression on the right-hand side is computed and this value is then moved to the F. Assume that the C & F are defined with pictures 99 & ZZ9.9 respectively and the present value of C is 3. Subsequently after the execution of the statement, the F will have the value 37.4.
CLOSE STATEMENT: When the processing of a file is completed, then the file may be closed. This is completed with the help of the CLOSE-verb. The form of the CLOSE statement is
ON SIZE ERROR OPTION: Whenever a size error occurs, the contents of the result field after the operation is unpredictable. Though, the processing is not-terminated and the co
what does it used
PROGRAM FOR SIMPLE PERFORM: We have to write a program to elaborate simple PERFORM statement Identification division. Program- id. Perf1. Environment division. Da
Illustration of Renames clause: In the illustration, PAT-OTHER-THAN-BASIC will become a fresh group consisting of DEARNESS-ALLOWANCE, HOUSE-RENT & MTHLY-INCENTIVE. Keep in min
FILE UPDATION: The method of modifying an old file with present information is termed as file updating. Master file: A master file is a file which is used as an author
PROGRAM FOR SCREEN SECTION: identification division. program- id. environment division. data division. working-storage section. 01 a pic 9(2) value
SEARCH VERB: The SEARCH verb is used to position elements in one-dimensional tables. Let us consider the following problem. Assume that each element of a table consists of thr
PROGRAM FOR SIZE ERROR: We have to write an easy program to elaborate the size error option. Identification division. Program- id. sizeerr. Environment division.
Example of read statement: Illustration: READ OLD-MASTER AT END MOVE ZERO TO END-OF-RECORDS. As a result of this statement, generally the next record from the OLD-MAST
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