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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 above statement. The foremost time the READ statement is executed, and then the first record of the file will be read into the record region explained in the FILE SECTION of the DATA DIVISION. The later time the READ statement is executed, the second record will be read in the similar region. In this way each time a READ statement is executed the successive records will be read in the similar region. Hence a time will come when there will be no more records in the file. In that situation the statements following the AT END clause will be executed. The format of the READ statement is shown below:
READ file-name RECORD [INTO identifier-1]
AT END imperative-statement
SPECIAL-NAMES: This paragraph is used to associate some hardware names to the user-specified mnemonic names. This paragraph is elective in all compilers. The format of this pa
WRITE Statement: The WRITE statement for a relative file has the format which is as shown below. WRITE record-name [ FORM identifier ]
Example of compound condition: In common, a compound condition has the form which is as shown below: Where condition-1 & condition-2 can be any one of the below:
single program how may when statement has used
PROGRAM FOR CONDITION NAMES: We have to write a simple program to demonstrate Condition names usage. identification division. program- id. environment division.
Example of Open statement: Illustration: The OPEN INPUT TRANSACTION, OLD-MASTER OUTPUT NEW-MASTER. The illustration represents that there are two input files named the
B (Blank Insertion) : The occurrence of a B anyplace in the picture will insert a space character in the edited data. There can be more than one B in the picture. Examples:
PROGRAM TO DEMONSTRATE MERGE VERB: The two files for which a record having 2 fields viz. Account Number and Name are already available. Now Merge these two files and create a
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
SEQUENTIAL FILE CREATION AND REWRITING: We have to write a program to create a student file with just two fields: sno i.e. Student Number and same i.e. Student Name. Add a few
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