Thread: Pointers

  1. #1
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    Pointers

    Is there a way to find whether a pointer is assigned a value or not?

  2. #2
    C++ Witch laserlight's Avatar
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    If you set pointers to 0 (or null, pretty much same thing in C++) when they no longer point to anything, you can just check if it is a null pointer. Other than that no, I do not think you can properly determine if a pointer points to a valid object or not.
    Quote Originally Posted by Bjarne Stroustrup (2000-10-14)
    I get maybe two dozen requests for help with some sort of programming or design problem every day. Most have more sense than to send me hundreds of lines of code. If they do, I ask them to find the smallest example that exhibits the problem and send me that. Mostly, they then find the error themselves. "Finding the smallest program that demonstrates the error" is a powerful debugging tool.
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