What you will learn in this chapter:
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It would be wonderful if this chapter didn't need to be written. However, the truth is that problems do arise when programs are developed and run.
Most experienced programmers agree that approximately 20 percent of program development time consists of writing program code. The remaining 80 percent is used for testing, debugging, and maintenance of that code. Clearly, anything you can do to reduce that 80 percent figure can help keep you on time and on budget.
It's common for programmers to lump bugs, program errors, and program exceptions into a single concept. Technically, each of these types of errors is different. Now consider each in a little more detail.
A bug is a specific type of error caused by the programmer. Bugs typically fall into one of three general categories:
A syntax error occurs when a statement does not comply with the rules of the language. ...