/// <summary> Создать объект для вычисления выражения из предопределенных функций, записанных строками </summary>
public Calc()
{
calc = new Calc<double>(
new UnaryOperation<double> [] {
Calc<double>.CreateUnaryOperation("+", a => a),
Calc<double>.CreateUnaryOperation("-", a => -a),
Calc<double>.CreateUnaryOperation("sqrt", a => Math.Sqrt(a)),
Calc<double>.CreateUnaryOperation("!", a => {
int res = 1;
for (int i = 2; i <= a; i++) {
res *= i;
}
return res;
}, true),
},
new BinaryOperation<double> [][] {
new BinaryOperation<double> [] {
Calc<double>.CreateBinaryOperation("^", (a,b) => Math.Pow(a,b), true),
},
new BinaryOperation<double> [] {
Calc<double>.CreateBinaryOperation("*", (a,b) => a*b),
Calc<double>.CreateBinaryOperation("/", (a,b) => a/b),
},
new BinaryOperation<double> [] {
Calc<double>.CreateBinaryOperation("+", (a,b) => a+b),
Calc<double>.CreateBinaryOperation("-", (a,b) => a-b),
}
}, new Func<CharEnum, Tuple<double>>[] { DoubleParser.Parse });
}
static void Main(string[] args)
{
DoubleCalc.Calc calc = new DoubleCalc.Calc();
Console.WriteLine("Введите выражение:");
Console.Write(" ");
string str = Console.ReadLine();
try {
double res = calc.Process(str);
Console.WriteLine("Результат:");
Console.Write(" " + res.ToString(CultureInfo.InvariantCulture));
} catch (CantCalcException e) {
if (e.ErrorPosition != null) {
Console.WriteLine(str);
for (int i = 0; i < e.ErrorPosition.Value; i++) {
Console.Write(" ");
}
Console.WriteLine("^");
Console.WriteLine("Символ: " + (e.ErrorPosition.Value+1));
}
Console.WriteLine("Ошибка: " + e.Message);
}
Console.ReadLine();
}