[NBLUG/talk] OT: First 500 prime numbers

Micxz (lovedialup.com) an_email at micxz.com
Thu Jun 5 16:12:00 PDT 2003


Glad to help you get your files up;

I'm not much for C programming but looky here:

/*
*
* Dumb program that generates prime numbers.
*/
#include <stdio.h>
#include <stdlib.h>

main(){
    int this_number, divisor, not_prime;

    this_number = 3;

    while(this_number < 10000){
            divisor = this_number / 2;
            not_prime = 0;
            while(divisor > 1){
                    if(this_number % divisor == 0){
                            not_prime = 1;
                            divisor = 0;
                    }
                    else
                            divisor = divisor-1;
            }

            if(not_prime == 0)
                    printf("%d is a prime number\n", this_number);
            this_number = this_number + 1;
    }
    exit(EXIT_SUCCESS);
}

I found this here:
http://publications.gbdirect.co.uk/c_book/chapter1/some_more_programs.html

I love google;

Micxz

Steve Zimmerman wrote:
> 
> I'm trying to make a program in C that prints out a table
> of the first 10 prime numbers, in an endeavor to eventually
> create a program that prints out the first 500 prime numbers
> (Knuth, v1, p. 147).  So far I am without success.  The file is
> www.sonic.net/~stevetux/prime2.c.  See prime1.c in the same
> directory for my successful half try.
> 
> Anyone want to give it a shot?  I'll appreciate advice, too, but
> what I'm really looking for is code.  Thanks.
> 
>         -- Steve Zimmerman
> 
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