Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > comp.os.linux.advocacy > #425851

Re: I'm the best c coder here.

From owl <owl@rooftop.invalid>
Newsgroups comp.os.linux.advocacy
Subject Re: I'm the best c coder here.
Date 2017-08-05 04:08 +0000
Organization O.W.L.
Message-ID <pi3abz.3g88x8@rooftop.invalid> (permalink)
References (4 earlier) <feae2868-c0a7-4ff5-ae71-0ad427d8028f@googlegroups.com> <om2jt7$ogs$1@news.albasani.net> <Jeff-Relf.Me@Aug.4--1.48pm.Seattle.2017> <pkbzb34a.b933u0@rooftop.invalid> <ZPednQQM1d-coBjEnZ2dnUU7-emdnZ2d@giganews.com>

Show all headers | View raw


Marek Novotny <marek.novotny@marspolar.com> wrote:
> On 2017-08-05, owl <owl@rooftop.invalid> wrote:
>> In comp.os.linux.advocacy Jeff-Relf.Me wrote:
>>> I'm the best c coder here, I think.
>>> 
>>
>> Jeff Rofl.
>>
>>> Fabian optimized something he shouldn't have;
>>> the I/O is thee only limiting factor, not "x%3".
>>> 
>>> Also, he failed to test the code he wrote,
>>> and _failed_ to compare it with mine.
>>> Usually, he fails to write _any_ code, much less test it.
>>> 
>>> Owl failed to write concise, readable code;
>>
>> Says the man who chose to use the least readable construct
>> in the C language.
>>
>>> instead, he foolishly optimized the wrong thing.
>>> 
>>
>> I "optimized" only because that is what Fabtard asked for.
>> Otherwise I would have used modulo. 
>>
>>> Marek Novotny's c was better than Owl's or Fabian's, 
>>> but it wasn't as concise|readable as mine, I think.
>>> Initially, he chose bash, not c.
>>
>> My code is far more "maintainable" than yours.  It is trivial
>> to expand it to use three or four values with no change
>> in complexity for the decision logic, and using an array of
>> function pointers instead of simply pointing printf() to an
>> array of strings opens all kinds of possibilities. 
> 
> Could you re-post yours? I've been away a while and just cleared
> everything and don't want to go through them all. Curious to see what
> you did. 
> 

Here's a version testing four primes over ten million iterations.
Jeff whined about using Fabtard optimization, so went back to
modulo in the main loop.

anon@lowtide:~/code/fizzbuzz$ cat pp.c
#include <stdio.h>

#define MAX 10000000
#define FOO 3
#define BAR 5
#define GAH 571 
#define DZZ 897 

void blah(int x){printf("%d\n",x);}
void fizz(int x){printf("Fizz\n");}
void buzz(int x){printf("Buzz\n");}
void fizzbuzz(int x){printf("FizzBuzz\n");}
void gooz(int x){printf("Gooz\n");}
void fizzgooz(int x){printf("FizzGooz\n");}
void buzzgooz(int x){printf("BuzzGooz\n");}
void fizzbuzzgooz(int x){printf("FizzBuzzGooz\n");}
void kaaz(int x){printf("Kaaz\n");}
void fizzkaaz(int x){printf("FizzKaaz\n");}
void buzzkaaz(int x){printf("BuzzKaaz\n");}
void fizzbuzzkaaz(int x){printf("FizzBuzzKaaz\n");}
void goozkaaz(int x){printf("GoozKaaz\n");}
void fizzgoozkaaz(int x){printf("FizzGoozKaaz\n");}
void buzzgoozkaaz(int x){printf("BuzzGoozKaaz\n");}
void fizzbuzzgoozkaaz(int x){printf("FizzBuzzGoozKaaz\n");}

int main(int argc, char *argv[])
{
   void (*f[])(int)={blah,fizz,buzz,fizzbuzz,
                     gooz,fizzgooz,buzzgooz,fizzbuzzgooz,
                     kaaz,fizzkaaz,buzzkaaz,fizzbuzzkaaz,
                     goozkaaz,fizzgoozkaaz,buzzgoozkaaz,fizzbuzzgoozkaaz};

   int i=0,v=0;
   for(i=1;i<=MAX;i++)
   {
      if(i%FOO==0){v+=1;}
      if(i%BAR==0){v+=2;}
      if(i%GAH==0){v+=4;}
      if(i%DZZ==0){v+=8;}
      f[v](i);
      v=0;
   }
   return 0;
}

anon@lowtide:~/code/fizzbuzz$

Hits only three times for all four over 10,000,000:

anon@lowtide:~/code/fizzbuzz$ time ./pp >ppout

real    0m0.798s
user    0m0.704s
sys     0m0.092s
anon@lowtide:~/code/fizzbuzz$ grep -C5 FizzBuzzGoozKaaz ppout
Buzz
2560931
Fizz
2560933
2560934
FizzBuzzGoozKaaz
2560936
2560937
Fizz
2560939
Buzz
--
Buzz
5121866
Fizz
5121868
5121869
FizzBuzzGoozKaaz
5121871
5121872
Fizz
5121874
Buzz
--
Buzz
7682801
Fizz
7682803
7682804
FizzBuzzGoozKaaz
7682806
7682807
Fizz
7682809
Buzz
anon@lowtide:~/code/fizzbuzz$

Back to comp.os.linux.advocacy | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread


Thread

Re: FizzBuzz: an Interview Question ( for programmers ). fr314159@gmail.com - 2017-08-02 11:14 -0700
  Re: FizzBuzz: an Interview Question ( for programmers ). owl <owl@rooftop.invalid> - 2017-08-02 20:19 +0000
    Re: FizzBuzz: an Interview Question ( for programmers ). owl <owl@rooftop.invalid> - 2017-08-02 21:06 +0000
    Re: FizzBuzz: an Interview Question ( for programmers ). Melzzzzz <Melzzzzz@zzzzz.com> - 2017-08-02 21:37 +0000
      Re: FizzBuzz: an Interview Question ( for programmers ). owl <owl@rooftop.invalid> - 2017-08-03 01:46 +0000
        Re: FizzBuzz: an Interview Question ( for programmers ). Melzzzzz <Melzzzzz@zzzzz.com> - 2017-08-03 04:32 +0000
          Re: FizzBuzz: an Interview Question ( for programmers ). owl <owl@rooftop.invalid> - 2017-08-03 05:01 +0000
            Re: FizzBuzz: an Interview Question ( for programmers ). Melzzzzz <Melzzzzz@zzzzz.com> - 2017-08-03 05:06 +0000
              Re: FizzBuzz: an Interview Question ( for programmers ). owl <owl@rooftop.invalid> - 2017-08-03 05:15 +0000
                Re: FizzBuzz: an Interview Question ( for programmers ). Melzzzzz <Melzzzzz@zzzzz.com> - 2017-08-04 05:02 +0000
                Re: FizzBuzz: an Interview Question ( for programmers ). owl <owl@rooftop.invalid> - 2017-08-04 13:52 +0000
                Re: FizzBuzz: an Interview Question ( for programmers ). Melzzzzz <Melzzzzz@zzzzz.com> - 2017-08-04 14:00 +0000
                Re: FizzBuzz: an Interview Question ( for programmers ). Marek Novotny <marek.novotny@marspolar.com> - 2017-08-04 12:56 -0500
                Re: FizzBuzz: an Interview Question ( for programmers ). Steve Carroll <fretwizzer@gmail.com> - 2017-08-04 11:03 -0700
                Re: FizzBuzz: an Interview Question ( for programmers ). Melzzzzz <Melzzzzz@zzzzz.com> - 2017-08-04 18:05 +0000
                Re: FizzBuzz: an Interview Question ( for programmers ). Steve Carroll <fretwizzer@gmail.com> - 2017-08-04 11:08 -0700
                Re: FizzBuzz: an Interview Question ( for programmers ). Snit <usenet@gallopinginsanity.com> - 2017-08-04 11:23 -0700
                Re: Marek Novotny is a command line jockey. Marek Novotny <marek.novotny@marspolar.com> - 2017-08-04 14:24 -0500
                Re: Marek Novotny is a command line jockey. Snit <usenet@gallopinginsanity.com> - 2017-08-04 12:45 -0700
                Re: This is better, no ? Marek Novotny <marek.novotny@marspolar.com> - 2017-08-04 15:24 -0500
                Re: Marek Novotny is a command line jockey. Snit <usenet@gallopinginsanity.com> - 2017-08-04 12:38 -0700
    Re: My code is twice as fast as Owl's. owl <owl@rooftop.invalid> - 2017-08-03 03:12 +0000
  Re: FizzBuzz: an Interview Question ( for programmers ). "F. Russell" <fr@random.info> - 2017-08-02 23:04 +0000
    Re: FizzBuzz: an Interview Question ( for programmers ). "F. Russell" <fr@random.info> - 2017-08-02 23:25 +0000
      Re: FizzBuzz: an Interview Question ( for programmers ). owl <owl@rooftop.invalid> - 2017-08-03 01:50 +0000
    Re: Fabian's code is always slower. owl <owl@rooftop.invalid> - 2017-08-03 04:41 +0000
      Re: Fabian's code is always slower. owl <owl@rooftop.invalid> - 2017-08-03 05:17 +0000
      Re: What's easier to read/maintain ? owl <owl@rooftop.invalid> - 2017-08-03 05:57 +0000
    Re: Fabian's code is always slower. fr314159@gmail.com - 2017-08-03 08:21 -0700
      Re: Fabian's code is always slower. Steve Carroll <fretwizzer@gmail.com> - 2017-08-03 09:24 -0700
      Re: Fabian's code is always slower. owl <owl@rooftop.invalid> - 2017-08-03 18:41 +0000
    Re: FizzBuzz: an Interview Question ( for programmers ). Snit <usenet@gallopinginsanity.com> - 2017-08-03 13:49 -0700
      Re: 4 lines, 4 states. Snit <usenet@gallopinginsanity.com> - 2017-08-03 22:11 -0700
        Re: 4 lines, 4 states. Snit <usenet@gallopinginsanity.com> - 2017-08-03 22:47 -0700
        Re: 4 lines, 4 states. Snit <usenet@gallopinginsanity.com> - 2017-08-03 22:52 -0700
          Re: Mozilla ThunderBird. Steve Carroll <fretwizzer@gmail.com> - 2017-08-04 08:54 -0700
          Re: Mozilla ThunderBird. Snit <usenet@gallopinginsanity.com> - 2017-08-04 10:43 -0700
            Re: FizzBuzz is a trick question. Snit <usenet@gallopinginsanity.com> - 2017-08-04 11:47 -0700
              Re: Michael Glasser, Steve Carroll, Marek Novotny, Branimir Maksimovic, etc. Snit <usenet@gallopinginsanity.com> - 2017-08-04 12:51 -0700
              Re: Michael Glasser, Steve Carroll, Marek Novotny, Branimir Maksimovic, etc. fr314159@gmail.com - 2017-08-04 12:57 -0700
                Re: Michael Glasser, Steve Carroll, Marek Novotny, Branimir Maksimovic, etc. Steve Carroll <fretwizzer@gmail.com> - 2017-08-04 13:02 -0700
                Re: Michael Glasser, Steve Carroll, Marek Novotny, Branimir Maksimovic, etc. Melzzzzz <Melzzzzz@zzzzz.com> - 2017-08-04 20:02 +0000
                Re: Michael Glasser, Steve Carroll, Marek Novotny, Branimir Maksimovic, etc. Steve Carroll <fretwizzer@gmail.com> - 2017-08-04 13:11 -0700
                Re: Michael Glasser, Steve Carroll, Marek Novotny, Branimir Maksimovic, etc. Melzzzzz <Melzzzzz@zzzzz.com> - 2017-08-04 20:17 +0000
                Re: Michael Glasser, Steve Carroll, Marek Novotny, Branimir Maksimovic, etc. Steve Carroll <fretwizzer@gmail.com> - 2017-08-04 13:42 -0700
                Re: Michael Glasser, Steve Carroll, Marek Novotny, Branimir Maksimovic, etc. "F. Russell" <fr@random.info> - 2017-08-04 23:06 +0000
                Re: Michael Glasser, Steve Carroll, Marek Novotny, Branimir Maksimovic, etc. Melzzzzz <Melzzzzz@zzzzz.com> - 2017-08-04 23:32 +0000
                Re: I'm the best c coder here. Snit <usenet@gallopinginsanity.com> - 2017-08-04 14:03 -0700
                Re: I'm the best c coder here. "F. Russell" <fr@random.info> - 2017-08-04 23:15 +0000
                Re: I'm the best c coder here. benj <benj@nobody.net> - 2017-08-04 19:35 -0400
                Re: I'm the best c coder here. "F. Russell" <fr@random.info> - 2017-08-05 16:08 +0000
                Re: Fabian seldom writes code, much less test it. owl <owl@rooftop.invalid> - 2017-08-05 03:09 +0000
                Re: 2 lines, 2^2 states, easily modified to 3^2 states. owl <owl@rooftop.invalid> - 2017-08-05 05:42 +0000
                Re: Who'd use "x++", in a loop, to find FizzBuzzGoozKaaz ? owl <owl@rooftop.invalid> - 2017-08-05 07:30 +0000
                Re: 2 lines, 2^2 states, easily modified to 3^2 states. Marek Novotny <marek.novotny@marspolar.com> - 2017-08-05 10:19 -0500
                Re: 2 lines, 2^2 states, easily modified to 3^2 states. Steve Carroll <fretwizzer@gmail.com> - 2017-08-05 10:13 -0700
                Re: 2 lines, 2^2 states, easily modified to 3^2 states. owl <owl@rooftop.invalid> - 2017-08-05 17:33 +0000
                Re: Fabian seldom writes code, much less test it. Marek Novotny <marek.novotny@marspolar.com> - 2017-08-04 22:24 -0500
                Re: Fabian seldom writes code, much less test it. "F. Russell" <fr@random.info> - 2017-08-05 13:37 +0000
                Re: Fabian seldom writes code, much less test it. "F. Russell" <fr@random.info> - 2017-08-05 14:25 +0000
                Re: I'm the best c coder here. owl <owl@rooftop.invalid> - 2017-08-05 03:22 +0000
                Re: I'm the best c coder here. Marek Novotny <marek.novotny@marspolar.com> - 2017-08-04 22:35 -0500
                Re: I'm the best c coder here. owl <owl@rooftop.invalid> - 2017-08-05 04:08 +0000
                Re: I reduced Owl's 43 lines to 5. owl <owl@rooftop.invalid> - 2017-08-05 07:25 +0000
                Re: Owl's FizBuzGozKaz branches 5 times more often. owl <owl@rooftop.invalid> - 2017-08-05 15:40 +0000
                Re: I'm _still_ the best c coder here. owl <owl@rooftop.invalid> - 2017-08-05 06:12 +0000
                Re: I'm _still_ the best c coder here. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-05 22:16 +0000
                Re: I increment things at the _start_ of a loop. Steve Carroll <fretwizzer@gmail.com> - 2017-08-06 11:04 -0700
                Re: I increment things at the _start_ of a loop. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-07 03:24 +0000
                Re: I increment things at the _start_ of a loop. Snit <usenet@gallopinginsanity.com> - 2017-08-06 20:35 -0700
                Re: "while ( x++ < 100 )" isn't "obscure". moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-07 04:59 +0000
                Re: I'm the best c coder here. chrisv <chrisv@nospam.invalid> - 2017-08-07 06:59 -0500
                Re: I'm the best c coder here. Steve Carroll <fretwizzer@gmail.com> - 2017-08-08 10:23 -0700
                Re: Michael Glasser, Steve Carroll, Marek Novotny, Branimir Maksimovic, etc. DFS <nospam@dfs.com> - 2017-08-04 17:56 -0400
                Re: Michael Glasser, Steve Carroll, Marek Novotny, Branimir Maksimovic, etc. "F. Russell" <fr@random.info> - 2017-08-04 23:04 +0000
                Re: Michael Glasser, Steve Carroll, Marek Novotny, Branimir Maksimovic, etc. Snit <usenet@gallopinginsanity.com> - 2017-08-04 16:09 -0700
                Re: Michael Glasser, Steve Carroll, Marek Novotny, Branimir Maksimovic, etc. fellatiohornblower@renlott.org - 2017-08-04 20:13 -0400
                Re: Michael Glasser, Steve Carroll, Marek Novotny, Branimir Maksimovic, etc. "F. Russell" <fr@random.info> - 2017-08-05 13:50 +0000
                Re: Michael Glasser, Steve Carroll, Marek Novotny, Branimir Maksimovic, etc. "F. Russell" <fr@random.info> - 2017-08-05 15:23 +0000
                Re: Michael Glasser, Steve Carroll, Marek Novotny, Branimir Maksimovic, etc. Snit <usenet@gallopinginsanity.com> - 2017-08-05 10:06 -0700
              Re: Michael Glasser, Steve Carroll, Marek Novotny, Branimir Maksimovic, etc. Doomsdrzej <.m@nsn.s> - 2017-08-05 11:52 -0400
                Re: Michael Glasser, Steve Carroll, Marek Novotny, Branimir Maksimovic, etc. Snit <usenet@gallopinginsanity.com> - 2017-08-05 09:55 -0700
    Re: Fabian's code is always slower. Takuya Saitoh <taka0038@gmail.com> - 2017-08-06 22:37 -0700

csiph-web