182. Qbasic sequential file handling to edit a record and display both edited and unedited records on the screen to compare them side by side.

182.A sequential data file “RECORD.DAT” contains different records under fields: name rollno., name, address and percentage. Write a program to edit a record and display both edited and unedited records on the screen to compare them side by side.

OPEN "D:\RECORD" FOR INPUT AS #1
OPEN "d:\TEMP.DAT" FOR OUTPUT AS #2
CLS
INPUT "ENTER ROLL NUMBER TO EDIT DATA"; E
FLAG = 0
WHILE NOT EOF(1)
INPUT #1, R, N$, A$, P
IF E <> R THEN
WRITE #2, R, N$, A$, P
ELSE
INPUT "ENTER ROLL NUMBER"; ER
INPUT "ENTER NAME"; EN$
INPUT "ENTER ADDRESS"; EA$
INPUT "ENTER PERCENTAGE"; EP
WRITE #2, ER, EN$, EA$, EP
FLAG = 1
END IF
WEND
IF FLAG = 0 THEN
PRINT "DATA NOT FOUND"
ELSE
PRINT "NON EDITED DATA"
PRINT "ROLL NUMBER= "; R
PRINT "NAME= "; N$
PRINT "ADDRESS= "; A$
PRINT "PERCENTAGE= "; P
PRINT "---------------"
PRINT "EDITED DATA"
PRINT "ROLL NUMBER: "; ER
PRINT "NAME: "; EN$
PRINT "ADDRESS: "; EA$
PRINT "PERCENTAGE: "; EP
END IF
CLOSE
KILL "D:\SALARY.DAT"
NAME "D:\TEMP.DAT" AS "D:\SALARY.DAT"
END