Thread: Transferring text from file into linked list

  1. #31
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    right i've done that now and it has solved the problem, which gives me another one.

    The pointer stored in root->next is the memory address of the next word which I know is correct, although it seems to think the pointer is null. why would this happen?

    Edit: it seems it does test the words but then doesn't seem to call the function again, what I want it to do is test whether or not the word entered by the user is in the list and how many times it occurs.

    Edit: Edit: it searches through the list now but seems to get a pointer error on the last node I think.
    Last edited by manutdfan; 01-18-2007 at 09:43 AM.

  2. #32
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    duh of course I get a pointer error as it is the start of the list, anyway it now seems to work although b should be the number of times a word occurs in the list and it doesn't always seem to be.

    Also is it possible to return both a and b from the same function?

  3. #33
    Hurry Slowly vart's Avatar
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    you can pass them by pointer
    All problems in computer science can be solved by another level of indirection,
    except for the problem of too many layers of indirection.
    David J. Wheeler

  4. #34
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    thanks, I realised I only needed to transfer them back to print out so I have just incorporated the printf statements into the search function.

    Just wondering is it possible to condense the printf commands below anymore:
    Code:
            printf("\n'%s'", word);
            printf(" occurs ");
            printf("%d", b);
            printf(" times.\nRetrieval from list took");
            printf("%d",a);
            printf(" comparisons. ");

  5. #35
    Hurry Slowly vart's Avatar
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    printf("\n'%s' occurs %d times.\nRetrieval from list took %d comparisons.", word,b,a);
    All problems in computer science can be solved by another level of indirection,
    except for the problem of too many layers of indirection.
    David J. Wheeler

  6. #36
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    I want to remove apostrophes from my text, but if I use the following statement it thinks there are too many as they are the initialiser for the query. How would I get round this? I was wondering whether it is possible to use ASCII code.

    x[b] == '''

    thanks

  7. #37
    Hurry Slowly vart's Avatar
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    you can use \" to print quote instead of the '
    All problems in computer science can be solved by another level of indirection,
    except for the problem of too many layers of indirection.
    David J. Wheeler

  8. #38
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    so i should use

    x[b] == '\"'

    because it doesn't seem to work.

  9. #39
    Hurry Slowly vart's Avatar
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    i mean you can write
    Code:
    printf("\n\"%s\" occurs %d times.\nRetrieval from list took %d comparisons.", word,b,a);
    if you want to do something else - please explain a little bit more
    All problems in computer science can be solved by another level of indirection,
    except for the problem of too many layers of indirection.
    David J. Wheeler

  10. #40
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    no sorry I am trying to remove all the apostrophes from my list so when it is searched they don't appear in words.

    so I was trying to compare each character in the list with an apostrophe to allow me to find and remove them.

    my attempt was x[b] == '''

    with the highlighted bit being the condition.

  11. #41
    {Jaxom,Imriel,Liam}'s Dad Kennedy's Avatar
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    You'd need an escape char with that. . . '\'' where the \ means the next char, if not a special char is litteral.

  12. #42
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    thanks, thats great it works now

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