pipe_par_child.c

Linux大学上机源码学习

#include "unistd.h"
#include "stdio.h"
#include "string.h"
main()
{ int fd[2],pid,n;
  char buffer[256],dat[20]="hello world\n";
  pipe(fd);
  pid=fork();
  if(pid==0)
  { close(fd[1]);
    n=read(fd[0],buffer,256);
    printf("child %d read %d bytes:%s",getpid(),n,buffer);
  }
 else
  {
  close(fd[0]);
  write(fd[1],dat,strlen(dat));
  printf("parent write%d byge: %s\n",strlen(dat),dat);
 }
exit(0);
}