/// <summary>
/// Pushes the given value into the stack
/// </summary>
/// <param name="number">value to push into stack</param>
public void Push(int number)
{
XInt xNumber = new XInt();
xNumber.SetNumber(number);
Stack.Push(xNumber);
}
/// <summary>
/// Subdivides two top most values
/// </summary>
/// <returns>subdivision result</returns>
public int Sub()
{
XInt xNumber_1 = Stack.Pop();
XInt xNumber_2 = Stack.Pop();
XInt xNumber_result = new XInt();
xNumber_result.SetNumber(xNumber_1.ConvertToInt() - xNumber_2.ConvertToInt());
Stack.Push(xNumber_result);
return(xNumber_result.ConvertToInt());
}