1.Comments are even more helpful to another programmer who needs to modify a program you wrote. This kind of situation comes up a lot in the world of professional programming. In fact, it’s estimated...

1.Comments are even more helpful to another programmer who needs to modify a program you wrote. This kind of situation comes up a lot in the world of professional programming. In fact, it’s estimated that the majority of a programmer’s time and effort go toward maintaining code that already exists. It’s not uncommon for a programmer to be charged with the task of modifying a program written by someone else—and there’s a chance that the original programmer won’t be around to answer any questions. So, good comments are critical.