#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <time.h>
#include <sys/time.h>
#include "person.h"
#include "walker.h"
#include "drunkard.h"


int main()
{
    const int npeople = 1000;
    person *x[npeople];
    int steps, i;
    double totaldistance = 0;
    const int nsteps = 10;
    extern void seed();

    seed();

    for (i = 0; i < 800; i++)
	x[i] = new drunkard;
    for (; i < 900; i++)
	x[i] = new walker;
    for (; i < npeople; i++)
	x[i] = new stroller;

    for (steps = 0; steps < nsteps; steps++)
	for (i = 0; i < npeople; i++)
	    x[i]->lurch();

    for (i = 0; i < npeople; i++)
	totaldistance += x[i]->distance();
    printf("a person taking %d steps seems to achieve a distance of %g\n",
	    nsteps, totaldistance / npeople);

    return 0;
}


void seed()
{
    struct timeval tv;
    struct timezone tz;
    gettimeofday(&tv, &tz);
    srand(tv.tv_sec + tv.tv_usec);
}