#include <iostream>
#include <string>
#include <vector>

using std::cout;
using std::endl;

std::string operator+(std::string ls, int rs) {
	std::vector<char> buffer;
	buffer.resize(ls.length() + 12);
	sprintf(&buffer.front(), "%s%i", ls.c_str(), rs);
	return std::string(&buffer.front());
}

std::string operator+(int ls, std::string rs) {
	std::vector<char> buffer;
	buffer.resize(rs.length() + 12);
	sprintf(&buffer.front(), "%i%s", ls, rs.c_str());
	return std::string(&buffer.front());
}

std::string operator+=(std::string& ls, int rs) {
	ls = ls + rs;
	return ls;
}

class ThreeDimPoint {
	friend std::ostream& operator<<(ostream& ls, const ThreeDimPoint rs);

private:
	int xpos;
	int ypos;
	int zpos;

public:
	ThreeDimPoint();
	ThreeDimPoint(int x, int y, int z);
	ThreeDimPoint& set(int x, int y, int z);
};

ThreeDimPoint::ThreeDimPoint() : xpos(0), ypos(0), zpos(0) {
}

ThreeDimPoint::ThreeDimPoint(int x, int y, int z) : xpos(x), ypos(y), zpos(z) {
}

ThreeDimPoint& ThreeDimPoint::set(int x, int y, int z) {
	xpos = x;
	ypos = y;
	zpos = z;
	return *this;
}

std::ostream& operator<<(ostream& ls, const ThreeDimPoint rs) {
	std::string output;
	output += rs.xpos + std::string(" ");
	output += rs.ypos + std::string(" ");
	output += rs.zpos + std::string(" ");
	ls << output;
	return ls;
}


int main() {
	ThreeDimPoint something( 3, 4, 5 );
	cout << something << endl; 

	ThreeDimPoint somethingtoo;
	cout << somethingtoo << endl;

	somethingtoo = something;
	cout << somethingtoo << endl;

	somethingtoo.set( 13, 12, 9 );
	cout << somethingtoo << endl;

	return ( 0 );
}

3 4 5 
0 0 0 
3 4 5 
13 12 9