arrays and files

This is a discussion on arrays and files within the C++ Programming forums, part of the General Programming Boards category; ok here is the code i got Code: fin.open("map2.txt"); while(!fin.eof()); { fin >> szMap[x][y]; cout<<szMap[x][y]<<endl; } the problem is well ...

  1. #1
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    arrays and files

    ok here is the code i got
    Code:
    fin.open("map2.txt");
    while(!fin.eof());
    {
    	fin >> szMap[x][y];
    	cout<<szMap[x][y]<<endl;
    }
    the problem is well alot of things i think... the file is initialised szMap[37][37]; and the length of the first and only line in map2.txt is 37 characters long and x and y are set to 0 for the time being... besides wondering how to fix the compile errors would this work? and how would i load say

    xxxxx
    xxxxx
    xxxxx

    into array szMap[][] from a file? because the example i have posted only loads one line (that im aware of)

    thx for any and all help
    Last edited by c++.prog.newbie; 09-27-2004 at 11:10 PM.

  2. #2
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    add the line - x++;
    at the end of your loop...

    and from my understanding y should be zero
    Code:
       x   0  1  2  3       //x1 points (x1)y0...x2 points to x2(y0)...etc...
    y 
    0      L  L   x   e
    1      I  I    x   t
    2      N  N  x   c 
    3      E  E   x   .
    4      1  2   x   \0
    5     \0  \0  \0

  3. #3
    and the hat of wrongness Salem's Avatar
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    > while(!fin.eof());
    Why this is a "bad thing" is in the FAQ
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.
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  4. #4
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    anyone know of a good file i/o tutorial because so far i have just been copying parts of examples...

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