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problem in goto command

This is a discussion on problem in goto command within the C Programming forums, part of the General Programming Boards category; I wanted to display "www.iloveyou.com" using the following command but it shows "ilove.comyou" . I don't understand what is the ...

  1. #1
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    problem in goto command

    I wanted to display "www.iloveyou.com" using the following command but it shows "ilove.comyou" . I don't understand what is the problem.

    Code:
    int number;
    printf ("www.");
    goto x;
    z:
    printf (".com");
    goto y;
    x:
    printf ("ilove");
    goto z;
    y:
    printf ("you");
    getch ();
    return 0;
    }

  2. #2
    Registered User manasij7479's Avatar
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    How about
    printf("www.iloveyou.com");
    and forgetting about silly tricks in which you have got a simple order of placement wrong
    ?
    :P
    Manasij Mukherjee | gcc-4.8.2 @Arch Linux
    Slow and Steady wins the race... if and only if :
    1.None of the other participants are fast and steady.
    2.The fast and unsteady suddenly falls asleep while running !



  3. #3
    Registered User TheBigH's Avatar
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    Why are you even doing this? The goto command should be used sparingly, because it is only rarely the best way to do something.

    What you've done is highlight the big problem with goto. It can lead to what is known as "spaghetti code": code that jumps from place to place in a disordered way and is hard to understand or maintain.
    Code:
    while(!asleep) {
       sheep++;
    }

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    @manasij

    i want to learn "goto function"........

  5. #5
    Registered User manasij7479's Avatar
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    Quote Originally Posted by learning_grc View Post
    i want to learn "goto function"........
    Then you've to
    goto here ;
    Manasij Mukherjee | gcc-4.8.2 @Arch Linux
    Slow and Steady wins the race... if and only if :
    1.None of the other participants are fast and steady.
    2.The fast and unsteady suddenly falls asleep while running !



  6. #6
    and the hat of Marriage Rodaxoleaux's Avatar
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    I simply don't have the patience to go over ALL the reasons why goto is horrible. Mostly because of terribly disorganized code? (insert Anti-Goto Order banner here)

    also. It's displaying that because you're telling it to. Switch goto y; and goto z;

    Quote Originally Posted by TheBigH View Post
    What you've done is highlight the big problem with goto. It can lead to what is known as "spaghetti code": code that jumps from place to place in a disordered way and is hard to understand or maintain.
    nvm. ^ i've been beaten
    Last edited by Rodaxoleaux; 10-02-2011 at 03:31 PM. Reason: beat like a noob in CoD

  7. #7
    ATH0 quzah's Avatar
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    Quote Originally Posted by learning_grc View Post
    I wanted to display "www.iloveyou.com" using the following command but it shows "ilove.comyou" . I don't understand what is the problem.
    Reorder the code in the order that it happens:

    Code:
    int number;
    printf ("www.");
    goto x;
    x:
    printf ("ilove");
    goto z;
    z:
    printf (".com");
    goto y;
    y:
    printf ("you");
    getch ();
    return 0;
    }
    There you go. See how easy that was?


    Quzah.
    Hope is the first step on the road to disappointment.

  8. #8
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    Read this to learn why goto is not a good idea for general use: Goto Considered Harmful. It does have it's place, but your code is not it.

  9. #9
    ATH0 quzah's Avatar
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    Quote Originally Posted by anduril462 View Post
    It does have it's place, but your code is not it.
    Actually it's a pretty good example of what you want them to learn about goto:
    Quote Originally Posted by TheBigH View Post
    What you've done is highlight the big problem with goto. It can lead to what is known as "spaghetti code": code that jumps from place to place in a disordered way and is hard to understand or maintain.
    If he has a hard time sorting out that small example, then he should get the idea that it's a pain to use, and avoid it. So as far as learning experiences go, it's pretty good.


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    Hope is the first step on the road to disappointment.

  10. #10
    Algorithm Dissector iMalc's Avatar
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    Quote Originally Posted by learning_grc View Post
    @manasij

    i want to learn "goto function"........
    "goto" is not a function.

    Diagnosis: The problem is that you want to learn about "goto".
    Solution: Do not learn about "goto". The less you know, the better!
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  11. #11
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    Quote Originally Posted by learning_grc View Post
    i want to learn "goto function"........
    Well, I would like you to learn how to program; but we can't always get what we ask for.
    Quote Originally Posted by anduril462 View Post
    Now, please, for the love of all things good and holy, think about what you're doing! Don't just run around willy-nilly, coding like a drunk two-year-old....
    Quote Originally Posted by quzah View Post
    ..... Just don't be surprised when I say you aren't using standard C anymore, and as such,are off in your own little universe that I will completely disregard.
    Warning: Some or all of my posted code may be non-standard and as such should not be used and in no case looked at.

  12. #12
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    They really should just make break and continue work with labeled loops. Then there would be no legitimate use for goto at all.
    It is too clear and so it is hard to see.
    A dunce once searched for fire with a lighted lantern.
    Had he known what fire was,
    He could have cooked his rice much sooner.

  13. #13
    ATH0 quzah's Avatar
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    Quote Originally Posted by iMalc View Post
    "goto" is not a function.

    Diagnosis: The problem is that you want to learn about "goto".
    Solution: Do not learn about "goto". The less you know, the better!
    I would down mod this if I could.

    You should know about goto. You should know when to use it, and how it works. Not knowing about it isn't going to help you when you run into it.


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  14. #14
    C++ Witch laserlight's Avatar
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    Quote Originally Posted by King Mir
    They really should just make break and continue work with labeled loops. Then there would be no legitimate use for goto at all.
    The "mimic exception handler" error handling style using goto would not see goto suitably replaced by such enhanced break and continue statements.
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    Quote Originally Posted by King Mir View Post
    They really should just make break and continue work with labeled loops. Then there would be no legitimate use for goto at all.
    Well, my personal belief is that, based on the conceptual design for the C language, goto's should only be used for error handling; a concept which was resolved in C++ with try and catch.

    Quote Originally Posted by quzah View Post
    I would down mod this if I could.

    You should know about goto. You should know when to use it, and how it works. Not knowing about it isn't going to help you when you run into it.
    Quzah.
    You should learn how it works, nothing really more. Are we really going to turn this into another debate about 'goto'? This has been done so many times before, and (most importantly), has never helped the OP.
    Quote Originally Posted by anduril462 View Post
    Now, please, for the love of all things good and holy, think about what you're doing! Don't just run around willy-nilly, coding like a drunk two-year-old....
    Quote Originally Posted by quzah View Post
    ..... Just don't be surprised when I say you aren't using standard C anymore, and as such,are off in your own little universe that I will completely disregard.
    Warning: Some or all of my posted code may be non-standard and as such should not be used and in no case looked at.

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