Answer:

' Ask the user for 10 numbers.
' Add them up, print the sum.
'
LET SUM = 0
LET COUNT = 1
DO WHILE COUNT <= 10 
  PRINT "Enter a number"       
  INPUT NUMBER                 
  LET SUM = SUM + NUMBER    
  LET COUNT = COUNT + 1
LOOP
PRINT "The sum is", SUM
END

(Notice how the indenting helps you see how things work.)

Asking the User for How Many numbers to add up

The LOOPing part of the program (in black) and the ADDING up part of the program (in red) are separate but cooperating parts, somewhat like playing the piano with two hands, or driving a stick shift car. The two parts are mingled together, and it is easy for you to get mixed up.

The program is OK as it is, but it can be improved. It would be nice to ask the user how many numbers to add up, rather than always add up 10 numbers. Here is a dilogue with the improved program:

How many numbers are to be added
? 4
Enter a number
? 100
Enter a number
? 2
Enter a number
? 10
Enter a number
? 1
The sum is 113

The first number the user enters, 4, is how many numbers are to be added up. The next four numbers that the user enters are added into the sum: 100+2+10+1 = 113.

QUESTION 13:

The improved program loops a different number of times in different runs. Where does the program keep the number of times to loop?