using System;
interface Printable
{
string Print();
}
class NonPrintablePaper
{
public NonPrintablePaper(int value)
{
this.value = value;
}
public override string ToString()
{
return(value.ToString());
}
int value;
}
class PrintablePaper: Printable
{
public PrintablePaper(string name)
{
this.name = name;
}
public override string ToString()
{
return(name);
}
string Printable.Print()
{
return("print...");
}
string name;
}
class MainClass
{
public static void TryPrinting(params object[] arr)
{
foreach (object o in arr)
{
Printable printableObject = o as Printable;
if (printableObject != null)
Console.WriteLine("{0}", printableObject.Print());
else
Console.WriteLine("{0}", o);
}
}
public static void Main()
{
NonPrintablePaper s = new NonPrintablePaper(13);
PrintablePaper c = new PrintablePaper("Tracking Test");
TryPrinting(s, c);
}
}
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