File pointer lists file twice?

This is a discussion on File pointer lists file twice? within the C Programming forums, part of the General Programming Boards category; Hey, Thanks ahead of time for any help you can give me on a problem Im having. I have a ...

  1. #1
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    Apr 2005
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    Question File pointer lists file twice?

    Hey,

    Thanks ahead of time for any help you can give me on a problem Im having.


    I have a UNIX C program that assigns a text list to a file pointer name "DirListPtr". Every time I run the program to go through the file, it lists the last entry in the text list twice.

    I am stumped, any ideas?

    The program uses the statement to go through the file.

    Code:
    while ((feof(DirListPtr)) == 0)


    Thanks again,

    Willz99ta

  2. #2
    Gawking at stupidity
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    If you understand what you're doing, you're not learning anything.

  3. #3
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    Cool Thanks

    I dont think I would ever figured that out...Thanks!


    Willz99ta

  4. #4
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    basically what the tutorial said is that when you read from the file, do not use feof() to check for the end-of-file. Instead use fgets() to fetch from the file, line by line and check the return value of fgets(). fgets() will return null on reading the end-of-file.

    so you file read loop would be

    Code:
    char line[100];
    
    while ((fgets(line,sizeof(line),DirListPtr)) != NULL)
    {
        /*Process "line"*/
    }

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