void Earth::DisplayUpgrades(ostream &file)
{
	Robot::DisplayUpgrades(file);
	if(fourXfour)
	{
		file << "4x4 drive train\n";
	}
	if(superCharged)
	{
		file << "Super Charged engine\n";
	}
	if(!getiOS() && !getAndroid() && !fourXfour && !superCharged)
	{
		file << "None\n";
	}
}
void Air::DisplayUpgrades(ostream &file)
{
	Robot::DisplayUpgrades(file);
	if(highAltitude)
	{
		file << "High altitude upgrade\n";
	}
	if(autoPilot)
	{
		file << "Auto-pilot upgrade\n";
	}
	if(!getiOS() && !getAndroid() && !highAltitude && !autoPilot)
	{
		file << "None\n";
	}
}