I understood that much. I only wanted to show that with little or no effort one could get this program to work correctly.
Of course the teacher is to blame by giving such a bad example to start with.
A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James
My blog: Imperial Deltronics