read multiple lines from a file

This is a discussion on read multiple lines from a file within the C Programming forums, part of the General Programming Boards category; I'm trying to write a program that reads in multiple lines from a file...and I can't figure out how to ...

  1. #1
    Registered User
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    Nov 2005
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    36

    read multiple lines from a file

    I'm trying to write a program that reads in multiple lines from a file...and I can't figure out how to set it to read in a specific number of lines...

    Let's say one of the parameters passed to my program says that it wants to read in the first 7 lines from the file. How do i do that?

    i know fgets reads in the first line...but where do i go after that?

  2. #2
    ATH0 quzah's Avatar
    Join Date
    Oct 2001
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    14,826
    Use a loop.
    Code:
    for( x = 0; x < numberoflinestoread; x++ )
    {
        ...read a line...
        ...do something with it...
    }
    Quzah.
    Hope is the first step on the road to disappointment.

  3. #3
    Registered User
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    Aug 2004
    Posts
    66
    you could also use a counter, counting the number of "line jumps", when this reaches the number you want (or if it reaches the EOF first) end your cycle.
    Code:
    x=0;
    while(x<number_of_lines && "name of the pointer to the file"!= EOF){
                
                 if("name of the pointer to the file"=EOF && x< number_of_lines-1)
                                 printf("COULDN'T READ THOSE MANY LINES");
                 else
                 fgets();
                 x++;
    }

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