How to extract words containing 'ab' & 'cd' in a text file?

[Umesh]

Can anyone do it? ARMY1987- what say?

[Army1987]

"CBFalconer " <cb********@yah oo.comha scritto nel messaggio
news:46******** *******@yahoo.c om...

di************* ****@gmail.com wrote:

>>
This should do it...

int main(void) {
FILE *open;
char word[64]

open = fopen("file.txt ", "r");
if(!open) return -1;

while(fscanf(op en, "%s", word) != EOF) {
if((strstr(word , "ab") != NULL) || (strstr(word, "cd") !=
NULL)) {
printf("gotcha [%s] !\n", word);
}
}
fclose(open);
}

I suggest you at least try code you suggest, or mark it untested.

Obvious Faults:
return -1 is illegal. Use EXIT_FAILURE and #include <stdlib>.

s/illegal/implementation-defined

The test for fscanf should be "== 1".

What else could it be, other than 1 and EOF?

Nothing makes cd follow ab.

So what?

Failure to return 0 (or EXIT_SUCCESS) at completion.

In C99 this is allowed.

And you didn't even say that it should be "%63s", that it prints
words containing "ab" OR "cd".

Then (not an error, but...):
the test strstr(word, "ab") != NULL hurts my eyes. We are merely
using strstr as a boolean expression, emphatising it is a pointer
is not very useful, also considering that he used if (!open), and
there if (open == NULL) *does* "look better", and does *not*
uselessly make a line 76 characters long, causing it to be wrapped.

[Peter 'Shaggy' Haywood]

Trolling square Umesh was jivin' on 29 May 2007 22:00:17 -0700 in
comp.lang.c.
How to extract words containing 'ab' & 'cd' in a text file?'s a bad
trip that Umesh has trolled before! Dig it!

>Can anyone do it? ARMY1987- what say?

Ladies & gentlemen, please do not respond to trolls. Ignore them and
they will go away.

--

Dig the even newer still, yet more improved, sig!

http://alphalink.com.au/~phaywood/
"Ain't I'm a dog?" - Ronny Self, Ain't I'm a Dog, written by G. Sherry & W. Walker.
I know it's not "technicall y correct" English; but since when was rock & roll "technicall y correct"?

[Richard]

ph******@alphal ink.com.au.NO.S PAM (Peter 'Shaggy' Haywood) writes:

Trolling square Umesh was jivin' on 29 May 2007 22:00:17 -0700 in
comp.lang.c.
How to extract words containing 'ab' & 'cd' in a text file?'s a bad
trip that Umesh has trolled before! Dig it!

>>Can anyone do it? ARMY1987- what say?

Ladies & gentlemen, please do not respond to trolls. Ignore them and
they will go away.

And yet you are the only one doing so on this mornings news feed. Well done.

[Umesh]

How to modify the program so that it can extact words starting with
'ab', ending with 'cd' but not containing 'ef'?

[Walter Roberson]

In article <11************ **********@z28g 2000prd.googleg roups.com>,
Umesh <fr************ ****@gmail.comw rote:

>How to modify the program so that it can extact words starting with
'ab', ending with 'cd' but not containing 'ef'?

The state machine approach I showed earlier can handle -all- of the
text processing problems that you have posed so far. Did you
try it? Did you research state machines? Once you know how to use
state machines, you will know how to sit down and rattle off the
solution to each of these kinds of questions in about 5 minutes.

State 0: 'a' -State 1; '\n' -State 0; otherwise -State 99
State 1: 'b' -State 2; '\n' Discard word -State 0; otherwise -State 99
State 2: 'c' -State 3; '\n' Discard word -State 0; 'e' -State 9;
otherwise -State 2
State 3: 'd' -State 4; '\n' Discard word -State 0; 'e' -State 9;
otherwise -State 2
State 4: '\n' Output word, Discard word -State 0; 'e' -State 9;
otherwise -State 2
State 9: 'f' -State 99; '\n' Discard word -State 0;
otherwise -State 2
State 99: '\n' Discard word -State 0; otherwise -State 99
--
"No one has the right to destroy another person's belief by
demanding empirical evidence." -- Ann Landers

[blufox]

On Jun 3, 3:54 pm, Umesh <fraternitydisp [e-mail] rote:

How to modify the program so that it can extact words starting with
'ab', ending with 'cd' but not containing 'ef'?

Hi Umesh,

How will you write a program which accepts a word from user and prints
some "blah blah" if it starts with "ab".
similiarly how will you write a program which will print "foo bar"
when it finds "cd" as the last two letters in the word.
and on the similar lines how will you write a program which will do
nothing which finds "ef" anywhere in the word?

Combine all the three tests together.
HTH
Thanks

[osmium]

"blufox" writes:

On Jun 3, 3:54 pm, Umesh <fraternitydisp [e-mail] rote:

>How to modify the program so that it can extact words starting with
'ab', ending with 'cd' but not containing 'ef'?

Hi Umesh,

How will you write a program which accepts a word from user and prints
some "blah blah" if it starts with "ab".
similiarly how will you write a program which will print "foo bar"
when it finds "cd" as the last two letters in the word.
and on the similar lines how will you write a program which will do
nothing which finds "ef" anywhere in the word?

Combine all the three tests together.

As far as I can tell umesh sees the world as consisting of a blur of
amorphous things: words and strings and lines and they seem to be synonyms
of some sort or other. Until he is willing to sit down and decide on
*definitions* for these three things that have some *invariant* meaning, he
is doomed to wander in the wilderness.

He should finish this table:

word - A word is ...
string - A string is ...
line - A line is ....

He seems to be searching for a needle in a haystack but, unfortunately, he
has no means of identifying what a needle is!

[blufox]

On Jun 4, 8:32 pm, "osmium" <r124c4u...@com cast.netwrote:

"blufox" writes:

On Jun 3, 3:54 pm, Umesh <fraternitydisp [e-mail] rote:

How to modify the program so that it can extact words starting with
'ab', ending with 'cd' but not containing 'ef'?

Hi Umesh,

How will you write a program which accepts a word from user and prints
some "blah blah" if it starts with "ab".
similiarly how will you write a program which will print "foo bar"
when it finds "cd" as the last two letters in the word.
and on the similar lines how will you write a program which will do
nothing which finds "ef" anywhere in the word?

Combine all the three tests together.

As far as I can tell umesh sees the world as consisting of a blur of
amorphous things: words and strings and lines and they seem to be synonyms
of some sort or other. Until he is willing to sit down and decide on
*definitions* for these three things that have some *invariant* meaning, he
is doomed to wander in the wilderness.

He should finish this table:

word - A word is ...
string - A string is ...
line - A line is ....

He seems to be searching for a needle in a haystack but, unfortunately, he
has no means of identifying what a needle is!

Because, unfortunately he is sitting on the needle.
Umesh, apply simple primary school mathematics to figure out how do
you read a word letter by letter.

Will help, may be...

thanks