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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 three fields, viz., the account number of a person, name of that and the amount that he has deposited. There are 400 such elements in the table and we want to find out whether a specific name is present in the table or not. The preferred name is given in the field is termed as NAME and if this name appears in an element of the table, we would like to show the name as well as the corresponding account number and amount. The DATA DIVISION entries for this trouble are as shown below:
The PROCEDURE DIVISION statements below can be a solution to the above problem.
In the above SEARCH statement, there are two sections- the AT END section and the WHEN section. If the condition NAME= NAME-OF-THE-PERSON (A1) is satisfied for some value the index name A1, the statement DISPLAY ACCOUNT-NUMBER (A1), NAM AMOUNT (A1) is executed. The AT END section is executed only when the whole table searched and the condition is not satisfied for any value of A1. The increment of A1 is take care by the SEARCH verb.
Comparison of Nonnumeric Operands: A nonnumeric operand can be compared to the other nonnumeric operand according to the rules as shown below: (i) Fields of Equal Sizes:
Character Set: To study any language, first one should know the alphabets of the language and they are termed as character set in general. There are 50 different characters in
Illustration of Search verb: To illustrate the other use of SEARCH verb, assume we wish to search the similar tab to find the number of persons whose deposited amount is more
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
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:
Minus sign - edit characters for numeric data: The minus sign can appear either at the leftmost or rightmost location of the picture. If an item is negative, a minus sign will
REWRITE STATEMENT: As in the situation of a relative file, the REWRITE statement needs that the file should be opened in the I-O mode, and if the SEQENTIAL access mode is spec
REWRITE statement: The REWRITE statement is used to update the existing record in a disk file. The normal format is as shown below: REWRIE record-name [ FROM ide
Rules of read statements: The next record is identified according to the rules as shown below: (i) Whenever the READ NEXT statement is the initial statement to be executed
Program for Sequential File Creation & Rewriting We have to write a program to create a Length file with just two fields: l (Length) and l-c (Length-Code). Add a few records.
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