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Where's the error? (C)

Discussion in 'C' started by cquestion, Dec 8, 2007.

  1. cquestion

    cquestion New Member

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    Hello, i am doing a project and I have a problem with the compilation. It says me that before the penultimate " } " there's an error. Culd you help me to find it?
    Code:
    #include <stdio.h>
    #include <string.h>
    
    void leer(FILE *Elementos)
    {
         Elementos=fopen("elementos.txt", "r");
         int i=0, j=0; char todos_fich[i][2];
         do
         {
           for(j=0;j=1;j++)
           {
             fscanf(Elementos, "%s", todos_fich[i][j]);
           }
          i++;
         
         }
         fclose(elementos.txt);
    }
     
    Last edited by a moderator: Dec 9, 2007
  2. Salem

    Salem New Member

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    Where is the 'while' which matches your 'do' ?

    Also, use [code][/code] tags when posting code.
     
  3. cquestion

    cquestion New Member

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    Hello Salemn. Ok, i understand the problem. But i have a new one about it: i want to fill todos_fich with the character strings in elementos.txt. So what should i include in while ( )?. I have tried while (fscanf(Elementos, "%s", todos_fich[j]);) != EOF), but it returns error...
     
  4. cquestion

    cquestion New Member

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    I'm sorry, I fortot using
    Code:
    : the thing I write (and doesn't work) is
    [code] while (fscanf(Elementos, "%s", todos_fich[i][j]) !=EOF);
     
  5. shabbir

    shabbir Administrator Staff Member

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    I have added the code block for you and you should start before the code with
    Code:
     and end it with [ /code]
     
  6. Salem

    Salem New Member

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    How do you know how many lines/words there are in the file?

    > char todos_fich[2];
    Aside from the fact that i is zero at this point, this doesn't create an array you can just extend at will.

    > for(j=0;j=1;j++)
    Refer to your book for proper syntax. Say
    for(j=0;j<2;j++)

    > fclose(elementos.txt);
    This takes the file handle, Elementos as the parameter.

    Passing Elementos as a parameter does no good. You'll get the same effect by making it a local variable.
     
  7. cquestion

    cquestion New Member

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    Hello Salem/shabbir , the problem is that I haven't text book for study. I am Spanish and the only book I have been told to buy is the one writed by "Kernich"(may be wrong writed, I don't remember the exact name). But that book isn't in Spanish language, and I have considered ordering it in English, but I'm afraid of missunderstand some words leading me to important missconceptions.

    Another think I'm interested in is that, as far as I know, matrixes are declared as, for example a matrix of inttegers:
    Code:
    int mat[10][20] 
    ; But I have some problems linking that way of declarations with the pointers way. I thing that
    Code:
     int *p=&mat 
    means
    Code:
    p=&mat[0]=&mat 
    . But if am referring to the pointer which contents the adress of
    Code:
    *p=&mat[0] 
    , what kind of pointer is? I mean , (kind of pointer)
    Code:
    *(*p) 
    . Also I have a second question: I think I could 'make' a matrix using those pointers, but I think that a matrix and a pointer to pointer of (kind of data) aren't the same thing, unlike what people and internet manuals usually say, because when I declare the matrix, I save a size of memory for my matrix, but if I do that with pointers...................┬┐Could their adress get mixed with other one's and give me problems?
    Note: The only solve I find is doing malloc when declaring the pointer. If I do that, can I assure that those pointer to pointers are exactly the same than matrixes?

    Thanks a lot, you help me so much...
     
  8. Salem

    Salem New Member

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