#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/wait.h>
#include <errno.h>

struct children
{
  int id;
  time_t start;
  time_t end;
};

int main(int arg, char **argv)
{
    int anzKin = atoi(argv[1]);
    int maxGes = atoi(argv[2]);
    struct children child[anzKin];
    int rank[anzKin];
    char id = 'A';
    unsigned int end,pid,i,j,place=0,loop,count = 0;
    time_t temp;


    for(loop = 0; loop < anzKin; loop++)
    {
	child[loop].id = fork();
	id = id+loop;

	pid = getpid();

	if(child[loop].id==0)
	{
	     //Kindprozess, bei fork() == 0
	     srand(time(0) + getpid());

	     for(i = 0; i < 5;i++)
	     {
	       usleep((10.0 * 1000000)/(rand() % maxGes + 1));
	       for(j = 0; j <= i; j++)
	       {
		 printf("-");
	       }

	       printf("%c\n", id);
	     }

	     break;
	}
	else if(child[loop].id > 0)
	{
	    //Vaterprozess, bei fork() > 0 -> PID Kindprozess
	    	printf("%d    %c\n",(child[loop].id-pid), id);
		id = 'A';
	}
	else
	{
	    perror("ERROR");
	}
    }

    if(getpid() > 0)
    {
      //Vaterprozess
      while( count < anzKin )
      {
	end = waitpid(-1, NULL, 0);

	rank[place] = end;
	place = place++;
	count = count++;
      }
      printf("RANK    CHILD    TIME\n");

	  for(place = 0; place < anzKin; place++)
	  {
	     printf("%d    %c\n", (place+1), ((rank[place]-pid)+64));
	  }
    }

    else
    {
	perror("ERROR");
    }


    return 0;
}