body.cpp
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	#define _USE_VECTOR_OSTREAM // allows vector
	#include "body.h"
	#include <istream>
	#include <ostream>

	using namespace std;

	istream& operator>>(istream& is, Vec2D& v)
	{
	char delim;
	is >> std::skipws;
	is >> delim;

	if (delim != '(')
	throw '(';

	is >> v[0];

	is >> delim;

	if (delim != ',')
	throw ',';

	is >> v[1];

	is >> delim;

	if (delim != ')')
	throw ')';

	return is;
	}

	istream& operator>>(istream& is, Body &body)
	{
	is >> std::skipws;
	char delim;

	// begin
	is >> delim;

	if (delim != '{')
	throw '{';

	is >> body.m;

	is >> delim;

	if (delim != ',')
	throw ',';

	is >> body.x;

	is >> delim;

	if (delim != ',')
	throw ',';

	is >> body.v;

	is >> delim;

	if (delim != ',')
	throw ',';

	char fix;

	is >> fix;
	body.fixed = (fix == 'T');

	// end
	is >> delim;

	if (delim != '}')
	throw '}';

	is >> std::noskipws;
	}

	ostream& operator<<(ostream& os, const Body &body)
	{
	os << "{" << body.m << ", " << body.x << ", " << body.v << ", " << body.fixed << "}";
	return os;
	}