Commodore 128D - Sample Program

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Sample Program
Now that you know how to use the FOR-NEXT loop and the INPUT | I
command, clear the computer's memory by typing NEW '—'
T then type the following program:
10T = 0
20 INPUT"HOW MANY NUMBERS";N
30FORJ = 1TON
40 INPUT'PLEASE ENTER A NUMBER ";X
50T = T + X
60 NEXT
70A = T/N LJ
80 PRINT
90 ? "YOU HAVE";N"NUMBERS TOTALING'r;T
100 ? "AVERAGE = ";A ij
110 END
This program lets you tell the computer how many numbers you want i i
to average. You can change the numbers every time you run the [—^
program without having to change the program itself.
Let's see what the program does, line by line:
v. )
Line 10 assigns a value of 0 to T (which will be the running total
of the numbers). j j
Line 20 lets you determine how many numbers to average,
stored in variable N.
Line 30 tells the computer to execute a loop N times.
Line 40 lets you type in the actual numbers to be averaged. i j
Line 50 adds each number to the running total!
Line 60 tells the computer to go back to line 30, increment the \ j
counter (J) and start the loop again. (—'
Line 70 divides the total by the amount of numbers you typed
(N) after the loop has been executed N times. j j
Line 80 prints a blank line on the screen.
Line 90 prints the message that gives you the amount of num- | |
bers and their total.
Line 100 prints the average of the numbers. t i
Line 110 tells the computer that your program is finished.
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58 USING C128 MODE—Advanced BASIC Programming '—
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