C++ Primer

This is a discussion on C++ Primer within the C++ Programming forums, part of the General Programming Boards category; Hi, I'm reading C++ Primer 4th Edition at the moment and have encountered something in the book which doesn't make ...

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    gin
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    C++ Primer

    Hi, I'm reading C++ Primer 4th Edition at the moment and have encountered something in the book which doesn't make sense to me, I don't know if I've interpreted it wrong or something but how does this equal 255:

    "So, if we assign 1 to an 8-bit unsigned char, the resulting value will be 255, which is 1 modulo 256."

    I don't seem to understand, wouldn't it be 1 since you've assigned it as 1? Sorry for asking such a stupid question.

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    C++まいる!Cをこわせ! Elysia's Avatar
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    I believe it should be -1.
    Assign -1 to unsigned char and you get 255.
    Quote Originally Posted by Adak View Post
    io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
    Quote Originally Posted by Salem View Post
    You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.

    Outside of your DOS world, your header file is meaningless.
    For information on how to enable C++11 on your compiler, look here.
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    gin
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    That's what I get for downloading a 'legit' version of the book.

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