#include <unistd.h>
#include <stdio.h>

#define MESLENGTH 28

int main(void){
   char inpbuf[MESLENGTH];
   int p[2]; /* prepare for pipe */
   int pid, n;
   if(pipe(p) == -1){
	fprintf(stderr,"pipe creation failed\n");
        exit(1);
   }

   switch(pid = fork()){
   case -1:
	fprintf(stderr,"cannot fork\n");
        exit(2);
   case 0:
	dup2(p[1],1); /* connect stdout to pipe */
	close(p[0]);
	close(p[1]);
        printf("bericht over pipe via printf\n");
        break;
   default:
	dup2(p[0],0); /* connect stdin to pipe */
	close(p[0]);
	close(p[1]);
        n = read(0, inpbuf, MESLENGTH);
	inpbuf[n]=(char)0;
        printf("Read from pipe: %s\n", inpbuf);
	wait(NULL);
   }
   exit(0);
}