int i=0;
char word[50];
printf("enter the word");
scanf("%s",word);
reserve(word,i);

void reserve(char word[], int i)
{
if(word[i]!='\0')
{
reserve(&word[i+1],i+1);
printf("%c",word[i+1]);
}
}

emre esirik(hacettepe computer science and engineering) wrote:
> int i=0;
> char word[50];
> printf("enter the word");
> scanf("%s",word);
> reserve(word,i);
>
> void reserve(char word[], int i)
> {
> if(word[i]!='\0')
> {
> reserve(&word[i+1],i+1);
> printf("%c",word[i+1]);
> }
> }

Solution #1: Suppose the word is just one letter long,
or is the zero-letter word "". Can you think of a way to
reverse it? Good! Now suppose you know how to reverse words
of N letters. Can you use that method along with a few other
simple operations to reverse a word of N+2 letters? (Hint:
write N+2 as 1+N+1.)

Solution #2: If you always use words like EWE or NOON
or MADAM or DENNED or DEIFIED or REDIVIDER, the program will
be fairly simple.

Remark: I cannot imagine why anyone would want to use
recursion for this problem, but ...

--
Eric Sosman
esosman@ieee-dot-org.invalid

In article <9dKdnZaZCfod0dranZ2dnUVZ_gSdnZ2d@comcast.com>,
Eric Sosman <esosman@ieee-dot-org.invalid> wrote:

> Solution #2: If you always use words like EWE or NOON
>or MADAM or DENNED or DEIFIED or REDIVIDER, the program will
>be fairly simple.

> Remark: I cannot imagine why anyone would want to use
>recursion for this problem, but ...

We've seen it before several times, as a homework problem.

..melborp krowemoh a sa ,semit lareves erofeb ti nees ev'eW
--
"Beware of bugs in the above code; I have only proved it correct,
not tried it." -- Donald Knuth

On Fri, 23 Nov 2007 11:53:31 -0800 (PST), "emre esirik(hacettepe
computer science and engineering)" <emreesirik@gmail.com> wrote:

Your question was answered in response to your post in
alt.comp.lang.learn.c-c++. Please don't post separate questions in
different newsgroups. If you must post to multiple groups, post a
single message to all the groups by using multiple addresses.


Remove del for email

"emre esirik(hacettepe computer science and engineering)"
<emreesirik@gmail.com> a écrit dans le message de news:
17651794-5cfe-490a-9780-0107dee5e579...oglegroups.com...
> int i=0;
> char word[50];
> printf("enter the word");
> scanf("%s",word);
> reserve(word,i);
>
> void reserve(char word[], int i)
> {
> if(word[i]!='\0')
> {
> reserve(&word[i+1],i+1);
> printf("%c",word[i+1]);
> }
> }

Try harder! You are off by one on about every line ;-)
I have reversations with your choice of algorithm.

--
Chqrlie.