DaniWeb Forum Index > Software Development > C

Random numbers (finding odd and even numbers)

Please support our C advertiser: Programming Forums - DaniWeb Sister Site

•

Join Date: May 2008

Posts: 2

Reputation: satanix is an unknown quantity at this point

Solved Threads: 0

satanix

Offline

Newbie Poster

Random numbers (finding odd and even numbers)

May 12th, 2008

hello i have got little problem

create a c program which starts with 3 processes the first proccess generates 50 random numbers and writes them inti common memory. the second proccess reads them and whrites the even numbers in file A,the odd numbers in file B.

 Help with Code Tags 
 C Syntax (Toggle Plain Text) 
#include <stdlib.h>
#include <stdio.h>
 
int main(void)
{
    int A;
    srand(time(0));
    for (A = 0; A < 50; ++A) {
       int number;
 
       number = rand();
       printf("%d\n");
 
  }
  return 0;
}
#include <stdlib.h>
#include <stdio.h>

int main(void)
{
    int A;
    srand(time(0));
    for (A = 0; A < 50; ++A) {
       int number;

       number = rand();
       printf("%d\n");

  }
  return 0;
}

i create first part of the program i also know how to find odd and even numbers

 Help with Code Tags 
 C Syntax (Toggle Plain Text) 
if ( x % 2 == 0 ) { //even
 
} else { /odd
 
}
if ( x % 2 == 0 ) { //even
 
} else { /odd
 
}

i know that i must insert "fd = open("blabla",O_RDWR|O_CREAT,0)" after "if" but my knowlodge isnt enogh

thanks

•

Join Date: Aug 2005

Posts: 15,620

Reputation: Ancient Dragon has a reputation beyond repute

Solved Threads: 1493

Ancient Dragon Ancient Dragon is offline

Offline

Still Learning

Re: Random numbers (finding odd and even numbers)

May 12th, 2008

don't use open(), instead use fopen() because FILE* and associated functions are much easier to use.

Here is a file i/o tutorial

Don't PM me with questions -- you might get a nasty PM in response. If you have a question then post it in one of the forums.

•

Join Date: May 2008

Posts: 2

Reputation: satanix is an unknown quantity at this point

Solved Threads: 0

satanix

Offline

Newbie Poster

Re: Random numbers (finding odd and even numbers)

May 13th, 2008

thanks for answer and tutarial page i read all of them fopen seems better then open.At the code which i wrote it finds 50random numbers but i dont know how to find old or even numbers and write them to 2 different file.
thanks

Quick Reply to Thread

Show Printable Version

Other Threads in the C Forum

Previous Thread: Validating Algorithms
Next Thread: End of file

Thread Tools	Search this Thread
Show Printable Version Email this Page

DaniWeb Message

Cancel Changes