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   | #include<stdio.h>
#include<unistd.h>
 
#define VALUE 100
 
void output(int p[2]);
void numbers(int p[2]);
 
int main(void)
{
   int channel[2];
   pipe (channel1);
 
   if (fork() == 0)
   {
      numbers(channel1);
   }
 
   if (fork() == 0)
   {
      output(channel1);	
   }
   while (wait((int *)0) >= 0);
}
 
void output (int p[2])
{
   long int num;
 
   while(1)
   {
      alarm(1);
      read(p[0]);
      alarm(0);
      printf("the number read from the pipe is %d\n", num);
   }
}
 
void numbers(int p[2])
{
   long time int num;
   int i=0;
 
   srandom((unsigned int) getpid());
 
   while(i < 25)
   {
      num=random();
      if (num % value == 0)
      {	
         write(p[1], &num, sizeof(int));
      }
   }
} | 
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