The content is just an excerpt from the complete note for SS2 Second Term Computer Studies Lesson Note – Handling Computer Files I. Check below to download the complete DOCUMENT
WEEK: 4
TOPIC: HANDLING COMPUTER FILES I (PRACTICAL)
CONTENT: (a) Basic operations on computer files (b) Steps involved in creating sequential files (c) Steps involved in accessing sequential file (d) basic file processing statements (e) effects of file insecurity: data loss and insecurity.
Sub-Topic 1: BASIC OPERATIONS ON A COMPUTER FILE.
The following are some operations that can be performed on a computer file;
Sub-Topic 2: STEPS INVOLVED IN CREATING AND ACCESSING SEQUENTIAL FILES.
Meaning of Sequential File: A sequential file is a file that is read from start to finish, character by character or line by line in a chronological order.
The following are steps involved in the creation of sequential files:
OPEN “filename” FOR mode AS #filenumber. |
PRINT#1, A$
PRINT#1, B$
PRINT#1, C$
OPEN “I”, #1,” filename
INPUT#, X$,Y$,Z$
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