sams C++ 21 days code error

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  1. #1
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    sams C++ 21 days code error

    Hi, im new to C++ and im using sams teach youself C++ in 21 days fifth edition to help me learn.

    Iv just got to the end of day one and an one of the excersises it to guess what the code does before we run it, but when i did compile an run it i had some problems.. This is the code..

    Code:
    #include <iostream>
    int main()
    {
        int x = 5;
        int y = 7;
        std::cout << end1;
        std::cout << x + y << " " << x * y;
        std::cout << end;
        char response;
        std::cin >>response;
        return 0;
    }
    Im using Bloodshed dev and these are the errors i got..

    line 4 'end1' undeclared (first use this function)

    and

    line 8 'end' undeclared (first use this function).

    It may be something simple but im completely new to this so i wouldnt know..

    Any help would be greatly appreciated.

    Thanks

  2. #2
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    The endline function is not "end1". It's endl and it belongs to namespace std, just like cout and cin, so you have to change it to std::endl.

  3. #3
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    Thanks for the fast reply .

    i changed it to this now

    Code:
    #include <iostream>
    int main()
    {
        int x = 5;
        int y = 7;
        std::endl;
        std::cout << x + y << " " << x * y;
        std::cout << end;
        char response;
        std::cin >>response;
        return 0;
    }
    but now i have an error saying

    line 6 statement cannot resolve address of overloaded function

    and

    line 8 'end' undeclared (first use this function).

    Sorry if im just being dumb..

    Thanks

  4. #4
    For Narnia! Sentral's Avatar
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    Quote Originally Posted by marbles View Post
    Thanks for the fast reply .

    i changed it to this now

    Code:
    #include <iostream>
    int main()
    {
        int x = 5;
        int y = 7;
        std::endl;
        std::cout << x + y << " " << x * y;
        std::cout << end;
        char response;
        std::cin >>response;
        return 0;
    }
    but now i have an error saying

    line 6 statement cannot resolve address of overloaded function

    and

    line 8 'end' undeclared (first use this function).

    Sorry if im just being dumb..

    Thanks
    Where are you delcaring 'end'? You need to declare it before you can use it.

    You need to use
    Code:
    std::cout << std::endl;
    or just
    Code:
    std::cout << "\n";
    if you want a new line
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  5. #5
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    ok, again thanks for the fast reply, the error on line 6 has gone now

    what does
    Code:
    std::cout << std::endl;
    actually do?

    I still have the same one on line 8 though lol =/


    thanks a lot for the help

  6. #6
    For Narnia! Sentral's Avatar
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    Quote Originally Posted by marbles View Post
    ok, again thanks for the fast reply, the error on line 6 has gone now

    what does
    Code:
    std::cout << std::endl;
    actually do?

    I still have the same one on line 8 though lol =/


    thanks a lot for the help
    It simply puts a new-line character into the stream, and it also flushes the buffer.

    You have to declare the variable you want to use. For example,
    Code:
    int myvariable;
    Or in your case,
    Code:
    int end;
    However, I don't know what you're trying to do by displaying an empty variable
    Last edited by Sentral; 03-12-2009 at 07:54 PM.
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    A site dedicated to keeping videogame memories alive!

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  7. #7
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    ah ok.. i sorta understand..

    thanks very much for your help.

    i now have
    Code:
    #include <iostream>
    int main()
    {
        int x = 5;
        int y = 7;
        std::cout << std::endl;
        int end;
        std::cout << x + y << " " << x * y;
        std::cout << "\n";
        std::cout << end;
        char response;
        std::cin >>response;
        return 0;
    }
    and it runs!

    my output is

    12 35
    2293640

    was this the expected output?

    where the hell did 2293640 come from lol?

    thanks

  8. #8
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    when i took out the
    Code:
    std::cout << end;
    it take that number away so i know its that thats making that number appear, just dont know why...


    thanks

  9. #9
    For Narnia! Sentral's Avatar
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    Quote Originally Posted by marbles View Post
    when i took out the
    Code:
    std::cout << end;
    it take that number away so i know its that thats making that number appear, just dont know why...


    thanks
    It's because you didn't initialize 'end' to anything. The computer simply assigns 'end' a random number. You must do,
    Code:
    int end=25;
    or whatever you want
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    A site dedicated to keeping videogame memories alive!

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    Share your experiences with us now!

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  10. #10
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    ohhh i seee.

    Ok then, thanks so much for all your help =)!

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