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PROGRAM FOR PERFORM - VARYING:
We have to write a program to elaborate PERFORM ...VARYING
Identification division.
Program- id. PerfVary.
Environment division.
Data division.
Working-storage section.
01 n pic 9(2) value 0.
01 i pic 9(2) value 1.
01 sum pic 9(4) value 0.
Procedure division.
Para-1.
Display(1 1) erase.
Display(5 5) "Enter a Number ".
Accept n.
Perform calc-para varying i from 1 by 1 until i > n.
Display(10 5) " Sum = " sum.
Stop run.
Calc-para.
Compute sum = sum + i.
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
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
SEQUENTIAL FILES WITH THE VARIABLE-LENGTH RECORDS: The Magnetic - tape or disk files can hold variable-length records. In this situation the file can have records with various
RULES OF RENAMES CLAUSE: The rules below should be observed while using the RENAMES clause: (i) All RENAMES entries should be written only after the last record descript
PERFORM WITH VARYING OPTION: The format is as shown below:
WRITE STATEMENT: The WRITE Statement verb releases a record in an output file. The syntax for the WRITE statement can be unlike depending on the output device and the medium us
CLASS CONDITION: The class condition establishes whether or not the value of the operand is numeric or alphabetic. The operand is numeric if it contains only the digits 0 t
PROGRAM FOR ADD VERB: We have to write a simple program to elaborate the ADD verb. You can also use edit characters in the program. Identification division. Program- id.
Rules for apply for the condition name: The rules below apply for the condition name. (i) The Condition names should be explained at level 88. The level number starts in ma
STATEMENTS FOR SEQUENTIAL FILES: A basic operation on a file includes the reading and writing of its records. Whenever the file is sequential, there are three verbs for the
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