//Method to simplify calling the parser from main
public static void StringParse(string s)
{
var node = new PolynomialParser(new PolynomialToSplit(new StringReader(s)));
Polynomial res = node.CheckExpression().Calculate();
Console.WriteLine();
Console.WriteLine("Result: ");
int counter = 0;
for (int i = 0; i < 101; i++)
{
if (res.pol_array[i] != 0)
{
if (i == 0)
{
if (counter == 0)
{
Console.Write(res.pol_array[i]);
counter++;
}
else
{
Console.Write(res.pol_array[i]);
}
}
else
{
//Coef = 1
if (res.pol_array[i] == 1)
{
if (counter == 0)
{
if (i == 1)
{
Console.Write("x");
counter++;
}
else
{
Console.Write($"x^{i}");
counter++;
}
}
else
{
if (i == 1)
{
Console.Write("+x");
}
else
{
Console.Write($"+x^{i}");
}
}
}
//Coef = -1
else if (res.pol_array[i] == -1)
{
if (i == 1)
{
Console.Write("-x");
}
else
{
Console.Write($"-x^{i}");
}
}
else
{
//Coef > 0
if (res.pol_array[i] > 0)
{
if (counter == 0)
{
if (i == 1)
{
Console.Write($"{res.pol_array[i]}x");
}
else
{
Console.Write($"{res.pol_array[i]}x^{i}");
}
counter++;
}
else
{
if (i == 1)
{
Console.Write($"+{res.pol_array[i]}x");
}
else
{
Console.Write($"+{res.pol_array[i]}x^{i}");
}
}
}
//Coef < 0
else
{
if (i == 1)
{
Console.Write($"{res.pol_array[i]}x");
}
else
{
Console.Write($"{res.pol_array[i]}x^{i}");
}
}
}
}
}
}
}
private static bool MainMenu()
{
Console.Clear();
Console.WriteLine("Choose an option:");
Console.WriteLine("1) Algebraic expression");
Console.WriteLine("2) Boolean expression");
Console.WriteLine("3) Matrices");
Console.WriteLine("4) Polynomials");
Console.WriteLine("5) Exit");
Console.Write("\r\nSelect an option: ");
switch (Console.ReadLine())
{
case "1":
Console.WriteLine("Enter the expression like in the example. Trigonometric functions, constants 'pi' and 'e', variables are allowed.");
Console.WriteLine("Example: (1.5 + sin(2.0 + cos(3.5)))*3");
Console.WriteLine();
string s = Console.ReadLine();
MathParser.StringParse(s);
Console.WriteLine();
Console.WriteLine("If you want to continue, press enter. Press 0 to exit.");
string exit = Console.ReadLine();
if (exit == "0")
{
return(false);
}
else
{
return(true);
}
case "2":
Console.WriteLine("Enter the expression like in the example. Constants '1' and '0' are allowed.");
Console.WriteLine("Example: (0 \\/ ((1))) /\\ 1");
Console.WriteLine();
string s1 = Console.ReadLine();
BooleanParser.StringParse(s1);
Console.WriteLine();
Console.WriteLine("If you want to continue, press enter. Press 0 to exit.");
string exit1 = Console.ReadLine();
if (exit1 == "0")
{
return(false);
}
else
{
return(true);
}
case "3":
Console.WriteLine("Enter the expression like in the example. Inversion (inv()) is allowed.");
Console.WriteLine("Example: [ 1 2 ; 3 4 ] + ([ 5 6 ; 7 8] + [0 0 ; 0 0])");
Console.WriteLine();
string s2 = Console.ReadLine();
MatrParser.StringParse(s2);
Console.WriteLine();
Console.WriteLine("If you want to continue, press enter. Press 0 to exit.");
string exit2 = Console.ReadLine();
if (exit2 == "0")
{
return(false);
}
else
{
return(true);
}
case "4":
Console.WriteLine("Enter the expression like in the example. Only the powers < 100 allowed.");
Console.WriteLine("Example: x^100 + (5 + x^1) * x^3");
Console.WriteLine();
string s3 = Console.ReadLine();
PolynomialParser.StringParse(s3);
Console.WriteLine();
Console.WriteLine("If you want to continue, press enter. Press 0 to exit.");
string exit3 = Console.ReadLine();
if (exit3 == "0")
{
return(false);
}
else
{
return(true);
}
default:
return(false);
}
}