Random Astroids same coords

I have a class astroid and when I create multiple objects each appears in the same location what am I doing wrong?

Code:

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// astroid.cpp
// author: Troy Curless
// Sunday September 5, 2004
// Definition of Astroid class member functions
#include <GL/glut.h>
#include <cstdlib>
#include <time.h>
#include "astroid.h"

extern const int SCREENWIDTH;
extern const int SCREENHEIGHT;

Astroid::Astroid()
{
  srand(time(0));
  xcoord=rand()%SCREENWIDTH+1;
  ycoord=rand()%SCREENHEIGHT+1;
  velocity = .1*(2-rand()%4);
}

void Astroid::draw() const{
  glColor3f(256.0, 0.0 , 0.0);
  glRecti(xcoord, ycoord,xcoord+10,ycoord+10);

}

void Astroid::rotate(){}
void Astroid::transform(){
  glTranslatef(velocity,velocity,0);
}

Astroid::~Astroid(){}

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I create the objects storing them in a vector of gameobjects
for (int i = 1; i<10; i++)
gameObjects[i] = new Astroid();

Just Started learning opengl and I have a couple other issues. I haven't learned how to transform individual objects. For instance my Astroid.transform() function actualy translates all the gameobjects so I need to read a bit more in the redbook to figure this one out but if anyone wants to post a quick and dirty explanation super. I assume translate is moving the view camera and hence all the objects.

I dont know how much this helps but call srand only once in your program.

yes that should probably help a lil

Code:

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bool init_rand = false;

Asteroid::Asteroid
{
  if(init_rand == false)
  {
      init_rand = true;
      srand(time(0));
  }
  //rest of the code
}

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P.S. Post #50 :D