Say that the first time a variable appears in a program is on the RIGHT side of an = sign in a LET statement. Is this a bug?
Yes, most likely it is a bug. Memory will be found for the new variable, and it will be set to zero. Usually this is a mistake.
That is the end of this chapter. You may wish to review the following. Click on a subject that interests you to go to where it was discussed.
The next chapter will discuss the INPUT statement, a way to get data into a variable from the user. This will make your program much more useful, and, of course, will make the story problems much more fun.