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OPEN STATEMENT:
Whenever a READ or a WRITE operation is executed on a file, then it should be open. The opening of a file may be completed with the help of the OPEN verb. With the OPEN verb it should be also indicated whether the file must be opened as an input file or output file. If it is an input file, only the reading is possible, while in the case of an output file, only writing is possible. The file once opened remains open until it is closed by the CLOSE statement. The OPEN statement in its easiest form is as shown below:
TO WRITE A QUADRATIC EQN ROOTS ARE COMPLEX IN COBOL PROGRAM
RULES OF REDEFINES CLAUSE The rules shown below govern the use of the REDEFINES clause: (i) The level-number of data-name-1 and data-name-2 should be identical. (ii) Exce
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
Second form of Divide verb: The second form of this verb is as shown below: In this situation the identifier-1 or numeric- literal-1 will be divided by identifier-2 or
Group Item as Operand in the Relational Condition: Whenever an operand of a relational condition is the group item, the item is then considered to be an alphanumeric field. Th
Data types available in COBOL are given below Alpha-numeric (X), numeric (9), alphabetic (A)
MULTI-DIMENSIONAL TABLES: The type of table which has been considered above is known as one-dimensional table. Whenever a table is such that each of its elements in turn is a
LABEL RECORD CLAUSE: This clause specifies whether or not the standard header and trailer labels must be present in the magnetic-tape files. VALUE OF CLAUSE: The VAL
The LENDER Bank offers mortgages on homes valued up to $500,000. The required down payment is calculated as follows: 4% of the first $60,000 borrowed 8% of the next $30,000 borro
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