static string CalcSent(string opState)
{
string postfix;
try
{
if ("错误" == (postfix = InfixToPostfix(opState)))
{
return(postfix);
}
}
catch (Exception)
{
return("错误");
}
Stack <double> optNum = new Stack <double>();
for (int i = 0; i < postfix.Length; ++i)
{
if (postfix[i] == ' ')
{
continue;
}
else if (1 == isOpt(postfix[i]))
{
try
{
switch (postfix[i])
{
case 's':
optNum.Push(Math.Sin(optNum.Pop()));
break;
case 'S':
optNum.Push(Math.Asin(optNum.Pop()));
break;
case 'c':
optNum.Push(Math.Cos(optNum.Pop()));
break;
case 'C':
optNum.Push(Math.Acos(optNum.Pop()));
break;
case 't':
optNum.Push(Math.Tan(optNum.Pop()));
break;
case 'T':
optNum.Push(Math.Atan(optNum.Pop()));
break;
case 'l':
optNum.Push(Math.Log10(optNum.Pop()));
break;
case 'L':
optNum.Push(Math.Log(optNum.Pop()));
break;
}
}
catch (Exception)
{
return("错误");
}
}
else if (2 == isOpt(postfix[i]) && (i + 1 == postfix.Length || postfix[i + 1] == ' '))
{
double opn1, opn2;
try
{
opn2 = optNum.Pop();
opn1 = optNum.Pop();
}
catch (Exception)
{
return("错误");
}
if (postfix[i] == 'q')
{
optNum.Push(Math.Pow(opn2, 1D / opn1));
}
else if (postfix[i] == '^')
{
optNum.Push(Math.Pow(opn1, opn2));
}
else
{
optNum.Push(CalcStandard(opn1, opn2, postfix[i]));
}
}
else
{
StringBuilder singleNum = new StringBuilder();
while (i < postfix.Length && ('0' <= postfix[i] && postfix[i] <= '9' || postfix[i] == '.' || postfix[i] == '-' && '0' <= postfix[i + 1] && postfix[i + 1] <= '9'))
{
singleNum.Append(postfix[i++]);
}
try
{
optNum.Push(Convert.ToDouble(singleNum.ToString()));
}
catch (Exception)
{
return("错误");
}
--i;
}
}
if (optNum.Count != 1)
{
return("错误");
}
else
{
return(Convert.ToString(optNum.Pop()));
}
}
private void function_click(object sender, EventArgs e)
{
Button btn = sender as Button;
first_number = double.Parse(Input.Text);
label.Text = btn.Text + "(" + first_number + ")";
if (!Degree.Checked)
{
switch (btn.Text)
{
case "log":
res3 = Math.Log10(first_number);
break;
case "ln":
res3 = Math.Log(first_number);
break;
case "sin":
res3 = Math.Sin(first_number * Math.PI / 180);
break;
case "cos":
res3 = Math.Cos(first_number * Math.PI / 180);
break;
case "tan":
res3 = Math.Tan(first_number * Math.PI / 180);
break;
case "ctg":
res3 = Math.Cos(first_number * Math.PI / 180) / Math.Sin(first_number * Math.PI / 180);
break;
case "asin":
res3 = Math.Asin(first_number);
break;
case "acos":
res3 = Math.Acos(first_number);
break;
case "atan":
res3 = Math.Atan(first_number);
break;
case "actg":
res3 = Math.Atan(1 / first_number);
break;
}
Input.Text = res3.ToString();
i = 0;
}
else
{
switch (btn.Text)
{
case "log":
res3 = Math.Log10(first_number);
break;
case "ln":
res3 = Math.Log(first_number);
break;
case "sin":
res3 = Math.Sin(first_number);
break;
case "cos":
res3 = Math.Cos(first_number);
break;
case "tan":
res3 = Math.Tan(first_number);
break;
case "ctg":
res3 = Math.Cos(first_number) / Math.Sin(first_number);
break;
case "asin":
res3 = Math.Asin(first_number);
break;
case "acos":
res3 = Math.Acos(first_number);
break;
case "atan":
res3 = Math.Atan(first_number);
break;
case "actg":
res3 = Math.Atan(1 / first_number);
break;
}
Input.Text = res3.ToString();
i = 0;
}
}