static void Main(string[] args)
{
checkEven myNum = new checkEven();
bool result;
Console.WriteLine("result = myNum.IsOdd(4);");
result = myNum.IsOdd(4);
Console.WriteLine(result);
Console.WriteLine("IEven ob = (IEven)myNum;");
IEven ob = (IEven)myNum;
Console.WriteLine("ob.IsEven(4) : {0}, ob.IsOdd(5) {1}", ob.IsEven(4), ob.IsOdd(5));
Console.ReadKey();
}
public bool IsOdd(int x)
{
IEven ob = this;
return(!ob.IsEven(x));
}