public string EqualExpression()
{
return((OperateSelector == null) ?
LastResult.ToString() + "="
: BaseNumber.ToString()
+ OperateSelector.Mark()
+ LastInput.ToString()
+ "=");
}
private NumberField Compute(NumberField number1, NumberField number2)
{
return(new NumberField(OperateSelector.Compute(number1.Value, number2.Value)));
}
public string OperateExpression()
{
return(LastResult.ToString() + OperateSelector.Mark());
}