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Reading words from file

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Join Date: Oct 2008

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bemo55

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Reading words from file

Apr 19th, 2009

Hello. I was wondering how to read strings from a file word by word and store the words into an array in c. I am having to write a program that tests words to see of they are palindromes from a little paragraph i wrote in a file. I've been trying to figure it out all afternoon with no luck.

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Join Date: Apr 2006

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death_oclock death_oclock is offline

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Re: Reading words from file

Apr 19th, 2009

fgets and strtok would be good places to start. Do you know how many strings you will be reading? If you don't it will make the array part a little more difficult.

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Join Date: Jan 2009

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jen140

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Re: Reading words from file

Apr 19th, 2009

Here you have a small example :

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 C Syntax (Toggle Plain Text) 
#include <stdio.h>
 
main()
{
   FILE *fp;
 
   fp = fopen("test.txt", "w");
   fscanf(fp, "%s", buffer);
   printf("Read Buffer: %s\n", %buffer );
   flcose(fp;);
 
}
#include <stdio.h>

main()
{
   FILE *fp;

   fp = fopen("test.txt", "w");
   fscanf(fp, "%s", buffer);
   printf("Read Buffer: %s\n", %buffer );
   flcose(fp;);

}

To better understand fscanf try viewing : http://irc.essex.ac.uk/www.iota-six....nf_fprintf.asp

Last edited by jen140; Apr 19th, 2009 at 9:04 pm.

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Join Date: Apr 2006

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death_oclock death_oclock is offline

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Re: Reading words from file

Apr 19th, 2009

I hate to sound like a prick but... using fscanf is generally a bad idea. There are plenty of reasons, but a big one is that most people don't really understand what its doing. Therefore it usually only works with carefully formatted input. Or by accident.

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Join Date: Oct 2008

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bemo55

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Re: Reading words from file

Apr 19th, 2009

I have looked at strtok but I didnt think that it would work with data i am reading in. All the examples i seen were declaring the array as a certain string like
char array1=" your string here"
and then using strtok. I didn't really understand how to use strtok.