Thread: Why throw exceptions?

  1. #1
    Registered User
    Join Date
    Aug 2001

    Why throw exceptions?

    We're learning about throwing exceptions in Deitel's book. I get the concept ok, but don't see the value of it.
    The typical example is catching an attempt to divide by zero. Why not just test for that, or whatever, in an if statement or similar. Maybe call another function if need be, without the bother of try, throw and catch? It seems more work than needed. I must be missing something, but what? Thanks.

  2. #2
    It's full of stars adrianxw's Avatar
    Join Date
    Aug 2001

    You will find situations later on that would be a little awkward to handle in other ways.

    I'd give you an example, but I suspect it might confuse you!!! Wait until you understand dynamic class constructors, you'll find situations where exception handling will really simplify your coding.

    Stick with understanding the concept - always good advice anyway.
    Wave upon wave of demented avengers march cheerfully out of obscurity unto the dream.

  3. #3
    geek SilentStrike's Avatar
    Join Date
    Aug 2001
    Ok, you write a math library.. it does some division, and it checks for the 0 divide. The programmer made an error obviously, you shouldn't be able to divide by 0. So what do you do? Print an error message to console and quit the program? The purpose of exceptions is to decouple error finding and error handling.
    Prove you can code in C++ or C# at TopCoder, referrer rrenaud
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