There are some questions about DO loops that can't be answered with our example program. For example, what happens if the values of I, FIRST, LAST, or STEP are changed while the loop is executing? Can you devise an experiment to answer this question? Think about it.
Try out the experiments suggested above. In turn, try to figure out what happens when each of the four variables is changed in the body of the loop. (Put an assignment to the variable of your choice either before or after the PRINT statement in the loop.) What do you discover?
Hamlet Project