CISY 125 – In-Class Lab 2
In today’s lab we will take a brief look at Q-Basic.
For more detailed notes on starting and using QBasic
see the QBasic Overview in the QBasic Lectures section of the Instructor
Notes. NOTE: Please don’t print this out in lab today…they
are large due to the pictures.
To start QuickBasic, double-click on the icon that
is on the computer desktop.
Press ESC to dismiss the Welcome box.
In the window labeled Untitled enter in the
sample program from below. As you enter in
the program, you do NOT have to type the QBasic commands in upper case (REM,
CLS, INPUT, LET, PRINT, END). After you type a line and press enter, the
computer will change the case of the commands to upper case.
It is extremely important that you always save a
program before you run it for the first time.
The worst case scenario of a bug in a program is that QBasic will close
and ALL of your work is lost.
From the menu select File then Save.
In the Save dialog, the line under the File Name is
where QBasic is attempting to save the file.
In the labs it will default to C:\WINDOWS\SYSTEM. However, you do not have access to this
directory and if you attempt to save to this directory you will get a
PATH/ACCESS error. You must save either
to a floppy (A:) or to the ROOT of the C: drive.
To get to the root of the C: drive keep double
clicking on [..] until the line under filename reads
C:\
In the filename field, please only enter 8
characters. Only uses letters and
numbers. No spaces. Here, enter
If you get an error message, call over the
instructor.
To run the program select Run then Start.
Enter in the numbers as seen below in the Sample
Run.
Submitting the
program
1. Submit the QBasic code
electronically (either hand in the In-Class Floppy, or e-mail the QBasic code)
AND
2. Submit the QBasic code on
paper.
REM please put your name
here
CLS
INPUT "Enter total
population of
INPUT "Enter total
square miles of
LET PeoplePerSqMile
= TotalPopulation / TotalSqMiles
PRINT "People per
square mile in
END
Enter total population of
Enter total square miles
of
People per square mile in
Press any key to continue