/* attenteFils.c */
#include <sys/types.h>          
#include <sys/wait.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <stdio.h>

int main(void)
{
 pid_t result, endPid;
 int   code, etat;

 do {
      result=fork();
 } while ((result==-1) && (errno==EAGAIN));

 switch(result)
  {
   case -1: fprintf(stderr,"Pb with fork !\n");
            break;
   case  0: sleep(1);
            fprintf(stderr,"code d'exit : ");
            scanf("%d",&code);
            exit(code);
            break;
   default: do { 
                endPid=waitpid(result,&etat,0);
            } while ((endPid==-1) && (errno==EINTR));
            fprintf(stderr,"code d'exit du fils : %d\n",WEXITSTATUS(etat));
            break;
  }
 return EXIT_SUCCESS;
}