K&R2 1.6 Arrays, exercise 1-13 (vertical histogram)

[arnuld]

i was able to create a solution for a Horizontal-Histogram. i was
completely unable to understand this Vertical-Histogram phenomenon.
even though i have looked at the solution at this page:

http://clc-wiki.net/wiki/K%26R2_solu..._1:Exercise_13

still i am not able to make sense of many-many things like (on the
same page) for my solution i have written this in documentation,t o
give reader some hint about what i thought before coding:
METHOD:
1.) we will count the length of each word by counting the
characters it has.

2.) we use an array where we will keep track of how many words
of a specific length we have encountered.

3.) for simplicity, we will not take into account any words
having more than 10 characters in it. extra characters will
simply be discarded.

*/

and this:

int i = 0;
int j =0; /* i and j are simply index counters */
int c = 0;
int nchar = 0; /* number of characters in a word */
int inspace = IN; /* a flag to know whether we are inside of outside
the word */
int wordlen[MAXLENGTH]; /* counts how many words of a particular
length we have seen */
but the Vertical-Histogram solution doe snot given any hints in
variables. completely alien kind of thing for me. does that mean i
should leave programming and do something else like carpentry or
selling water purifiers :-(

[user923005]

On Apr 5, 2:35 am, "arnuld" <geek.arn...@gm ail.comwrote:

On Apr 5, 12:58 am, "user923005 " <dcor...@connx. comwrote:
Why not think up your own solution to K&R exercise 1-13?

this is all i can do:

#include<stdio. h>

int main()
{
return 0;

}

Have you covered arrays yet?

not sure what you mean. i am at chapter 1, so i know only this:

type arr[size];

"arr" is an array of type "type" and "size" tells the number of
elements it has. that's it.

It is just that the problem is trivial with 2-d arrays. I guess that
you did not get there yet.

[Richard Heathfield]

Flash Gordon said:

<snip>

The most serious complaints I have on your code are that you are not
checking for overflow on your counts,

Mm-hmmm...

passing a long to printf having told it to expect an int!

WHAT?

| long thisval = 0;
<snip>
| printf("%4d | ", thisval);

Oh deary deary me. You do have a point, don't you!

Your output will also be messed up if you have too many of a given
word length.

Aye.

--
Richard Heathfield
"Usenet is a strange place" - dmr 29/7/1999
http://www.cpax.org.uk
email: rjh at the above domain, - www.

[CBFalconer]

arnuld wrote:

>

.... snip ...

>
i compile my code with this:

gcc -ansi -pedantic -Wall -Wextra -O input.c

but if you say "-std=c99" is a better idea then i will do that.

In general, it is not a better idea. Most people are using C90 or
C95 compilers. K & R is written to that standard.

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