Sample With Strings And Signals

OnTrain()
{

	if(Train.IsFollowed())
	{
		string str;
		str="Train Passing: "+Train.GetNumber()+" passing signal.";

		if(Train.GetSpeed()>5)
		{
			str=str+"Fast. ";
		}
		else
		{
			str=str+"Slow. ";
		}

		if(Signal.IsClear())
		{
			str=str+"Signal Clear ";
		}

		if(!Signal.IsClear())
		{
			str=str+"Signal NOT Clear ";
		}

		signal NextSig;
		NextSig=Signal.NextSignal();

		if(NextSig.IsOn())
		{
			str=str+"Next signal is on. ";
		}

		Display(str);
	}
}

import