Code will not compile - code from a book!

This is a discussion on Code will not compile - code from a book! within the C++ Programming forums, part of the General Programming Boards category; Ok, I am using Bloodshed-Dev C++ to compile (I just started learning this C++ stuff) and with this book that ...

  1. #1
    Registered User Chubz's Avatar
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    Code will not compile - code from a book!

    Ok, I am using Bloodshed-Dev C++ to compile (I just started learning this C++ stuff) and with this book that I recently bought, "C++ In Plain English", the code:

    EDIT - NOW WITH "CODE TAGS"
    EDIT 2 - NOW I GOT IT RIGHT!

    Code:
    #include <stdio.h>
    void main () {
            printf("Can you C++ now?");
    {

    does NOT want to compile

    What is wrong!? The other weird thing is that from the book reviews from Amazon.com, most were positive and even the negative ones never mentioned the code examples in the book not compiling correctly.

    This is horrible - what is going on here!!??
    Last edited by Chubz; 09-11-2004 at 09:31 PM. Reason: Added CodeTags

  2. #2
    Toaster Zach L.'s Avatar
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    First, just a convenience detail. Use code tags (read announcement at top of forum).

    Anyway, what you have there is a { where there should be a }. And, 'void main' is bad. Use 'int main'. A search on this board will reveal a dozen answers as to why this is so. As a result, you will also want a 'return 0;' after your print. And... Your window will probably disappear too quickly to see anything. Check this site's FAQ for information to prevent this.

    Cheers.

  3. #3
    Carnivore ('-'v) Hunter2's Avatar
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    The book is horrible. First, it uses void main. Main should always return int (as Prelude says, "always has, always will" ). Second, it uses C headers (<stdio.h> instead of <cstdio>). Third, its indentation is bad for newbies. Fourth, it's got a typo - the last bracket should be a CLOSING bracket, not another opening one. And last, it uses printf() instead of cout.

    Here's a fixed up version of the program:
    Code:
    #include <iostream>
     
    int main()
    {
       //Write "Can you C++ now?" and then go to the next line
       std::cout << "Can you C++ now?" << std::endl;
     
       //Pause the program so it doesn't close right away
       char c;
       std::cin.get(c);
      
       //Quit the program
       return 0;
    }
    Just Google It. √

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  4. #4
    Registered User Chubz's Avatar
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    Ok, I appreciate the help.

    Oh, and sorry for not using code tags, I will use them next time.

    Once I read about how to use 'em I will edit my original post and add code-tags for the code example!


  5. #5
    Toaster Zach L.'s Avatar
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    Hmm... Hunter's answer is more complete... That's all you'll need to run the program. It'd be worthwhile to look into cin and such so that you know what he is doing and why.

    Cheers.

  6. #6
    Registered User Chubz's Avatar
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    Quote Originally Posted by Hunter2
    The book is horrible. First, it uses void main. Main should always return int (as Prelude says, "always has, always will" ). Second, it uses C headers (<stdio.h> instead of <cstdio>). Third, its indentation is bad for newbies. Fourth, it's got a typo - the last bracket should be a CLOSING bracket, not another opening one. And last, it uses printf() instead of cout.

    Here's a fixed up version of the program:
    Code:
    #include <iostream>
     
    int main()
    {
       //Write "Can you C++ now?" and then go to the next line
       std::cout << "Can you C++ now?" << std::endl;
     
       //Pause the program so it doesn't close right away
       char c;
       std::cin.get(c);
      
       //Quit the program
       return 0;
    }
    WOAH, MAN I AM READY TO BURNNN THAT BOOK!

    Oh well, looks like I'm gonna have to find another book that is actually worth a crap.

    Thanks for the help, though! I intend to stay here for a while.

  7. #7
    Toaster Zach L.'s Avatar
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    Do a search for books on this forum too. It has been discussed at length, and additionally, the name of a site with reviews of many programming books has been posted.

  8. #8
    Carnivore ('-'v) Hunter2's Avatar
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    Don't burn it yet, it might still be useful... i.e. to get revenge on a longtime enemy

    J/K man, even if a book sucks... well, get a refund if you can, but if you can't then keep it anyway because there's almost always something you can learn from it even if only what NOT to do
    Just Google It. √

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  9. #9
    Registered User Chubz's Avatar
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    Quote Originally Posted by Hunter2
    Code:
    #include <iostream>
     
    int main()
    {
       //Write "Can you C++ now?" and then go to the next line
       std::cout << "Can you C++ now?" << std::endl;
     
       //Pause the program so it doesn't close right away
       char c;
       std::cin.get(c);
      
       //Quit the program
       return 0;
    }
    Ok, Now i'm REALLY confused! :P

    First of all, your code uses std::cout and many other different things than the tutorials on this website (cprogramming.com , of course) do.

    For example, on their first tutorial, instead of placing std::cout and all of that other stuff, this is what it looks like:

    Code:
    #include <iostream.h> 
    int main() 
    {
      cout<<"HEY, you, I'm alive!  Oh, and Hello World!"; 
      return 0;    
    }
    Of course, you must add "cin.get();" before the "return 0;" to get it to show up without closing, at least I did. :P

    Anyways, what is going on! SO many different ways of doing things - i'm confused out the yin-yang!

  10. #10
    Registered User caroundw5h's Avatar
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    Here is a decent tutorial that answers your question. You may want to start off with a tutorial first and then for a more indepth look get a book, and one that isn't Archaic Actually I hear pretty good things about Bruce Eckel's Thinking in C++ 2 it's a free e-book with tons of source code.
    As to the FAQ I trully believe it needs to be updated, just keep coding and experimenting and coming back to the board, that's what it's hear for.

    Cheers

  11. #11
    i dont know Vicious's Avatar
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    I love my C++ Black Book.

    But its really just preference, as long as it is up to date (with the standard), and explains the code thouroughly (the C++ Black Book has "In-Depth" sections in each chapter).
    What is C++?

  12. #12
    Registered User Chubz's Avatar
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    Ah, thanks for being so kind and helpful guys.

    I will check out those things that you told me and see if I can learn anything from that.

    Oh well, wish me luck!!!

  13. #13
    Carnivore ('-'v) Hunter2's Avatar
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    Yes, get a (good) tutorial or book. But for your benefit, I will explain...

    The only thing different between my code and the tutorial's code is 1,2,3:
    1) Mine uses standard C++ (<iostream> not <iostream.h>, std::cout not cout)
    2) Mine goes to the next line after writing "Can you C++ now?"
    3) Mine puts in the cin.get() to pause the program before ending.
    Just Google It. √

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  14. #14
    Registered User caroundw5h's Avatar
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    3) Mine puts in the cin.get() to pause the program before ending.
    I was actually curious why you declared a variable
    Code:
    char c
    and then
    Code:
    cin.get(c)
    your never going to use c why allocate memory for it? Or is that a C++ convention?

  15. #15
    Code Goddess Prelude's Avatar
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    >Or is that a C++ convention?
    It is a convention, but I'll refrain from mentioning what kind. If people feel better by declaring a dummy variable then who are we to say otherwise? There's nothing technically wrong with it.
    My best code is written with the delete key.

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