public string DoCmd(int cmd)
{
switch (cmd)
{
case 0:
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
case 8:
case 9:
case 14:
case 16:
case 18:
if (St == State.FirstNumEnter)
{
return(FirstNum.DoEdit(cmd));
}
if (St == State.SecondNumEnter)
{
return(SecondNum.DoEdit(cmd));
}
break;
case 10:
Op = Operation.Add;
return("+");
case 11:
Op = Operation.Substract;
return("-");
case 12:
Op = Operation.Multiply;
return("*");
case 13:
Op = Operation.Devide;
return("/");
case 15:
FirstNum.DoEdit(cmd);
SecondNum.DoEdit(cmd);
break;
case 17:
if (FirstNum.Number.Length == 0 || SecondNum.Number.Length == 0)
{
break;
}
St = State.Execute;
Frac a = new Frac(FirstNum.Number);
Frac b = new Frac(SecondNum.Number);
string result = "";
switch (Op)
{
case Operation.Add:
result = (a + b).ToString();
break;
case Operation.Substract:
result = (a - b).ToString();
break;
case Operation.Multiply:
result = (a * b).ToString();
break;
case Operation.Devide:
result = (a / b).ToString();
break;
default:
break;
}
St = State.FirstNumEnter;
return(result);
case 19:
if (St == State.FirstNumEnter)
{
St = State.SecondNumEnter;
}
else
{
St = State.FirstNumEnter;
}
break;
default:
break;
}
return("");
}
public string DoCmd(int cmd)
{
switch (cmd)
{
case 0:
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
case 8:
case 9:
case 14:
case 15:
case 16:
case 18:
if (St == State.FirstNumEnter)
{
return(FirstNum.DoEdit(cmd));
}
if (St == State.SecondNumEnter)
{
return(SecondNum.DoEdit(cmd));
}
break;
case 10:
Op = Operation.Add;
return("+");
case 11:
Op = Operation.Substract;
return("-");
case 12:
Op = Operation.Multiply;
return("*");
case 13:
Op = Operation.Devide;
return("/");
case 17:
if (FirstNum.Number.Length == 0 || SecondNum.Number.Length == 0)
{
break;
}
bool isFracFirst = false;
bool isFracSecond = false;
for (int i = 0; i < FirstNum.Number.Length; i++)
{
if (FirstNum.Number[i] == FirstNum.delim && i != FirstNum.Number.Length - 1)
{
isFracFirst = true;
}
}
for (int i = 0; i < SecondNum.Number.Length; i++)
{
if (SecondNum.Number[i] == SecondNum.delim && i != SecondNum.Number.Length - 1)
{
isFracSecond = true;
}
}
if (!isFracFirst || !isFracSecond)
{
break;
}
St = State.Execute;
Frac a = new Frac(FirstNum.Number);
Frac b = new Frac(SecondNum.Number);
string result = "";
switch (Op)
{
case Operation.Add:
result = (a + b).ToString();
break;
case Operation.Substract:
result = (a - b).ToString();
break;
case Operation.Multiply:
result = (a * b).ToString();
break;
case Operation.Devide:
result = (a / b).ToString();
break;
default:
break;
}
St = State.FirstNumEnter;
return(result);
case 19:
if (St == State.FirstNumEnter)
{
St = State.SecondNumEnter;
}
else
{
St = State.FirstNumEnter;
}
break;
default:
break;
}
return("");
}