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How Programs Don't Work

Many new programmers become discouraged when they start to test their programs. Errors appear everywhere. Some of these are syntax errors, which are identified by the computer as it looks at the program and becomes confused by what you wrote. Other errors are logic errors, which are only noticed by the programmer as the program is being tested, if they are noticed at all. Logic errors sneak by the computer unnoticed, but they will cause it to do something unintended.

As you start to write your own programs, you will become well-acquainted with errors. They're a natural part of the process. Programming errors are called bugs, a term that dates back a century or more to describe errors in technical devices. The process of fixing errors has its own term also: debugging. Whether you want to or not, you'll get a lot of debugging experience as you learn how to write computer programs.

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