Именованный канал на с++

#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>

int main()
{
   int client_to_server;
   char myfifo[] = "in";

   char str[BUFSIZ];
   while(1)
   {
	   printf("Input message to serwer: ");
	   scanf("%s", str);

	   client_to_server = open(myfifo, O_WRONLY);
	   write(client_to_server, str, sizeof(str));

           if(strcmp("exit",str) == 0)
		   break;
   }
   close(client_to_server);

   /* remove the FIFO */
   printf("done!\n");

   return 0;
}

 $ gdb <in >out &