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noob programmer needs a hand with file IO =(

Discussion in 'C' started by tichonga, Dec 4, 2007.

  1. tichonga

    tichonga New Member

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    Been working on this for a whole day now. I need to write text at a particular point in a file.

    CODE:
    Code:
    /* fseek example */
    #include <stdio.h>
    
    int main ()
    {
    FILE * pFile;
    pFile = fopen ( "myfile.txt" , "w" );
    fputs ( "This is an apple." , pFile );
    fseek ( pFile , 9 , SEEK_SET );
    fputs ( " sam" , pFile );
    fclose ( pFile );
    return 0;
    }
    OUTPUT:

    This is an apple. sam

    SHOULD BE:

    This is a sample.


    Could it be my compiler? I just have a crappy one that I downloaded online somewhere.


    fflush(pFile)

    after my first fputs() doesn't work either. =(
     
    Last edited by a moderator: Dec 4, 2007
  2. tichonga

    tichonga New Member

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    fixt. was my compiler
     
  3. shabbir

    shabbir Administrator Staff Member

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    If you are opening the file using "w" that means its created newly and so it does not have a position you are specifying because fseek cannot put a pointer beyond EOF.
     
    Last edited: Dec 4, 2007

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