public struct myVector3
{
public float x, y, z;
public float rot_x, rot_y, rot_z;
}

foreach (var obj in GameObject.FindGameObjectsWithTag("Cube1"))

{
myVector3 i = new myVector3();

i.x = obj.transform.position.x;
i.y = obj.transform.position.y;
i.z = obj.transform.position.z;

i.rot_x = obj.transform.eulerAngles.x;
i.rot_y = obj.transform.eulerAngles.y;
i.rot_z = obj.transform.eulerAngles.z;

ObjectsPositions.Add(i);
}

public void BackMyCubes()
{
ObjectsPositions = Load();

foreach (var obj in ObjectsPositions)
{
GameObject i = Instantiate(Cube1Pref, new Vector3(obj.x, obj.y, obj.z), Quaternion.identity);
i.transform.Rotate(obj.rot_x, obj.rot_y, obj.rot_z, Space.World)
}
ObjectsPositions.Clear();
}

    int mod = glutGetModifiers();
    if (mod == (GLUT_ACTIVE_CTRL|GLUT_ACTIVE_ALT)) {
      cout << "CTRL+Alt+D press" << endl;
    }