Tasks can be Very Big

The first design is a rough sketch. Details come later. Let's keep the plan as it is, but complete the first task with more detail. The first task is:

Get the number of Miles

Let us do this by:

' Get the number of Miles
PRINT "What is the first reading"
INPUT FIRST
PRINT "What is the second reading"
INPUT SECOND
LET MILES = SECOND - FIRST

The rest of the program can remain the same as before:

' Get the number of gallons
PRINT "How many gallons were used"
INPUT GALLONS
'
' Calculate and print miles per gallon           
PRINT MILES / GALLONS, "Miles per Gallon"
'
END

Now the first task is performed by using five statements.