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FD Entry for variable-length Records:
The RECORDS CONTAINS and BLOCK CONTAINS clause are quite dissimilar in the case of files with variable- length records. The syntax of these two clauses is as shown below:
WRITE statement: The WRITE statement for tape and sequential-disk files has the syntax shown below. WRITE record-name [ FROM identifier ] As a resu
PERFORM WITH VARYING OPTION: The format is as shown below:
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
PERFORM WITH UNTIL OPTION: The format is as shown below: Illustration: A) Perform p-3 until i > 5. Here p-3 will be executed whenever i B) Perform p-2 thru
/ (Slash Insertion): The edit character slash (/) also termed as virgule or stroke, may appear anyplace in the picture. When used, it will be inserted. More than one slash can
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
ADD and SUBTRACT CORRESPONDING: The CORRESPONDING option can also used with the ADD and SUBTRACT verbs. The following are some of the formats of these verbs with the CORRESPON
THE SIMPLE SORT VERB: The process of sequencing the records in some preferred manner is termed as sorting. The Sorting is done upon some key data item in the record. For illus
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 a
Comparison of Numeric Operands: We are well-known with the kind of the relational condition where both the operands are numeric. The comparison in this situation is algebraic
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