Test of the Loop Details

The program has all the details of the loop completed. All you need to do is fill in the statements that make up the two tasks "get the starting balance" and "handle one transaction" and the complete program is finished.

But first, let us test the loop control structure by itself. Just add two PRINT statements. These statements are sometimes called "dummy statements" because they are used to fill in for something more complicated.

' get the starting balance
'
PRINT "Get starting balance"
LET QUIT$ = "N"
DO WHILE QUIT$ = "N" 

  ' handle one transaction
  PRINT "handle one transaction"
  PRINT "Do you want to quit? Y or N"
  READ QUIT$ 
LOOP
'
END

Here is one run of the program with dummy statements:

Get starting balance   <--- done once
handle one transaction <--- dummy task, done as many times as the user wants
Do you want to quit? Y or N
? N
handle one transaction <---
Do you want to quit? Y or N
? N
handle one transaction <---
Do you want to quit? Y or N
? Y