Brian Kernighan Puns

The magnanimous ...the irresistible ...the geek personified....and an incredible story-teller ...Brian.W.Kernighan!! Take a peek his commentary at **#**lca2022

https://www.youtube.com/watch?v=ECCr_KFl41E

I was not able to find anything online :(

Not so much of a question, just a fascination of their works. I haven't even read their full works. Yet I hear, read so much about them. All the time, more often than I can keep count. Also if any other personality I (programmers) should read. Many Thanks :)

Ah, a genuinely humble and a brilliant man,importantly one of my worshipped hero ,says it all. But also "Deglorifies" his all invaluable contributions to the computing industry,like, live in that special "league" ...

A salute!...You are awesome Brian!

https://www.linuxjournal.com/article/7035

If you could ask Brian Kernighan anything (of K&R’s the C Programming Language, what would you ask him?

I’m looking for interview questions. If your question is picked i will give credit and upload the interview here!

Hi! I'm learning from an old C book off ebay.

Brian W. Kernighan and Dennis M. Ritchie (Pub. 1978)

I'm on the Control Flow chapter, Exercise 3-3. Where a modification to the itoa functions is required to allow for the whole range range of integer values, the example on the page will fail on -2147483648 as it overflows when the sign is removed as part of the solution.

I have put a case into the function where it checks whether the input magnitude is greater than the max positive.

This seems messy to me, can anyone think of a way make the solution more elegant?

My code is below, this is my first time posting on this subreddit - I already use reddit so thought I'd give this a try rather than stackoverflow :)

Any other advice is welcome, it goes without saying that I'm a noob.

Cheers

/*
Code to test the itoa function.
This is my solultion to Exercise 3-3 of "The C Programming Language"
by Brian W. Kernighan and Dennis M. Ritchie.
*/

#include<stdio.h>
#include<stdlib.h>

#define MAX 100
#define LOWLIMIT -2147483648
#define HIGHLIMIT 2147483647

char s[MAX];

// Function declaration
int itoa(int n, char* s);
void reverse(char* s);

int main(void)
{
  // Convert an integer to a string representation
  for(int i = LOWLIMIT; i <= HIGHLIMIT; i++)
  {
    itoa(i, s);

    puts(s);
  }

  return EXIT_SUCCESS;
}


// Integer argument is converted to a string representation
int itoa(int n, char* s)
{
  int i, sign;
  int max = 1;
  int temp = 1;

  // Left shift to get max possible size for input int
  for(i=0 ; temp>0; i++)
  {
    max = temp;
    temp = (temp << 1) + 1;
  }

  // Check if input is greater in magnitude than max value for positive
  // integer. If so, then return max negative.
  if(((sign = n) < 0) && ((-max) > n))
  {
    sprintf(s, "-2147483648");

    return EXIT_SUCCESS;

  } else if((sign = n) < 0)
  {
    n = -n;
  }

  i = 0;

  // Find remainder of division by 10 and add to ASCII code offset for
  // numeric symbols.
  // While there is still another order of magnitude, repeat the loop.
  do
  {
    s[i++] = n % 10 + '0';
  } while((n /= 10) > 0);

  // If the number was negative, then add a hyphen to the array

https://corecursive.com/brian-kernighan-unix-bell-labs1/#