Main method:
#include <iostream>
#include <cstdlib>
#include "SDL.h"
#include "object.h"
using namespace std;

/*class Object{
	int foo;
	public:
	Object(){
		foo = 1024;
	}
};*/

int main(int argc, char *argv[]){
	cout <<"Initializing SDL." << endl;
	int quit = 0;
	SDL_Event event;
	SDL_Surface *screen;
	if(SDL_Init(SDL_INIT_VIDEO)< 0) {
		cout <<"Could not initialize SDL:" << SDL_GetError() << endl;
		SDL_Quit();
		return 2;
	} else {
		cout << "SDL initialized.";
	}
	screen = SDL_SetVideoMode(800,600,0,SDL_SWSURFACE);
	if(screen == NULL){
		cout <<"Error creating surface:" << SDL_GetError() << endl;
		SDL_Quit();
		return 2;
	}
	Object ball;
	while(!quit){
		while(SDL_PollEvent(&event)){
			switch(event.type){
				case SDL_QUIT : quit = 1; break;
				case SDLK_LEFT : break;
				default : break;
			}
		}
	}
	SDL_Quit();
	return 0;
}

Object.h:
#ifndef OBJECT_H
#define OBJECT_H
using namespace std;

class Object{
	public:
	Object();
	Object(long ID);
	Object(long ID,int position[2]);
	void setXVel(int velocity);
	void setYVel(int velocity);
	void setPos(int position[2]);
	void updatePos();
};
#endif

object.cpp:
#include "SDL.h"
using namespace std;

class Object{
	int xvel,yvel;
	int pos[2]; //(x,y) format - pos[0] = x, pos[1] = y
	long ident;
	public:
	Object(){
		xvel = yvel = 0;
	}
	Object(long ID){
		ident = ID;
		xvel = yvel = 0;
	}
	Object(long ID,int position[2]){
		ident = ID;
		setPos(position);
		xvel = yvel = 0;
	}
	void setXVel(int vel){
		xvel = vel;
	}
	void setYVel(int vel){
		yvel = vel;
	}
	void updatePos(){
		pos[0] += xvel;
		pos[1] += yvel;
	}
	void setPos(int position[2]){
		pos[0] = position[0];
		pos[1] = position[1];
	}
	virtual ~Object();
};