static void Main(string[] args)
{
Stopwatch timer = new Stopwatch();
string expString;
Expression exp;
double a = 0;
while ((expString = Console.ReadLine()) != string.Empty)
{
try
{
exp = new Expression(expString);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
continue;
}
timer.Reset();
timer.Start();
for (int i = 0; i < 1000000; i++)
{
a = exp.Evaluate();
}
timer.Stop();
Console.WriteLine(a);
Console.WriteLine("{0} calculations per second", 1000000 / timer.Elapsed.TotalSeconds);
}
}
static void Main(string[] args)
{
Expression e = new Expression(args[1]);
System.Console.WriteLine(e.Evaluate());
}
void calculate()
{
try
{
Expression exp = new Expression(Display);
exp.SetVariable("Ans", answer);
answer = exp.Evaluate();
string ans = answer.ToString();
allClear();
int i = 0;
if (ans[0] == '-')
{
addToDisplay(Tokens.UnaryMinus, "-");
i++;
}
if (char.IsDigit(ans[i]))
{
foreach (char c in ans)
{
if (char.IsDigit(c))
addToDisplay(Tokens.Digit, c.ToString());
else if (c == '.')
addToDisplay(Tokens.Point, c.ToString());
else if (c == 'E')
addToDisplay(Tokens.Exp, c.ToString());
else if (c == '+' || c == '-')
addToDisplay(Tokens.ExpOperator, c.ToString());
}
}
else
{
// NaN, Infinity etc.
addToDisplay(Tokens.Variable, ans.Substring(i, ans.Length - i));
}
resultState = true;
}
catch (Exception e) when (e is ArgumentException || e is OverflowException || e is FormatException)
{
// OverflowException and FormatException are thrown by Double.Parse from within Expression.Evaluate
}
}
