randomwalk.cpp

#include<iostream>
#include<cstdlib>
#include<ctime>
#include"vect.h"

int main()
{
	using namespace std;
	using VECTOR::Vector;
	srand(time(0));
	double direction;
	Vector step;
	Vector result(0,0);
	unsigned long steps = 0;
	double target;
	double dstep;
	cout<<"Enter target distance (q to quit)\n";
	while ( cin >> target){
		cout<<"Enter step length"<<endl;
		if ( !(cin >> dstep))
			break;
		while ( result.magval() < target)
		{
			direction = rand()%360;
			step.set(dstep,direction,'p');
			result = result + step;
			steps ++;
		}

		cout<<"After "<<steps <<" steps, the subject has the following location:\n";
		cout<<result<<endl;
		result.polar_mode();
		cout<<"or\n"<<result<<endl;
		cout<<"Average outward distance per step = "<<result.magval()/steps;
		steps= 0;
		result.set(0,0);
		cout<<"Enter target distance(q to quit)\n";
	}
	cout<<"Bye\n";
}