static void Main(string[] args)
{
Polynomials MyPolynomials = new Polynomials();
//Options
//0. Exit program
//1. Create polynomial and insert it into the list
//2. Add two polynomial together and insert result into list
//3. Multiply two polynomials and insert
//4. Delete Polynomial at given index
//5. Evaluate polynomial
//declare variable for later use
Polynomial temppoly;
//While menu has not been exited by user
while (true)
{
System.Console.WriteLine("\n\n\n\nAssignment 1 Main Menu");
System.Console.WriteLine("Please choose one of the options below");
System.Console.WriteLine(" ");
System.Console.WriteLine("0. Exit program");
System.Console.WriteLine("1. Create polynomial");
System.Console.WriteLine("2. Add two polynomials");
System.Console.WriteLine("3. Multiply two polynomials");
System.Console.WriteLine("4. Delete a polynomial");
System.Console.WriteLine("5. Evaluate a polynomial at a given x\n");
System.Console.Write("Choose a number: ");
//get choice by user
string entry = System.Console.ReadLine();
//User exits the program
if (entry.Equals("0"))
{
Environment.Exit(0);
}
//create a temporary polynomial for use
temppoly = new Polynomial();
//User adding terms
if (entry.Equals("1"))
{
System.Console.WriteLine("Press x at anytime to finish adding terms");
//Variables used to gather user input
int tempce = 0;
byte tempe = 0;
string entry1 = "";
//Until user presses x, add Coefficient and Exponent
//If user enters 0 for Coefficient, will prompt user
//to reenter term.
while (true)
{
try
{
System.Console.Write("Coefficient: ");
entry1 = System.Console.ReadLine();
if (entry1.Contains("x"))
{
break;
}
tempce = System.Convert.ToInt32(entry1);
System.Console.Write("Exponent: ");
entry1 = System.Console.ReadLine();
if (entry1 == "x")
{
break;
}
tempe = System.Convert.ToByte(entry1);
temppoly.AddTerm(new Term(tempce, tempe));
}
//Any invalid input will be caught and have a message returned
catch
{
System.Console.WriteLine("Error, try again.");
}
}
//add the newly created term to list of polynomials
if (temppoly.count > 0)
{
MyPolynomials.Insert(temppoly);
System.Console.Write("\nPolynomial Added: ");
temppoly.Print();
}
}
//User tries to add Polynomial
if (entry.Equals("2"))
{
//temp variables
string entry2 = "";
int polychoice1 = 0;
int polychoice2 = 0;
//Ask user to select desire polynomials to add
while (true && MyPolynomials.P.Count > 0)
{
try
{
System.Console.Write("First Polynomial: ");
entry2 = System.Console.ReadLine();
polychoice1 = System.Convert.ToInt32(entry2);
System.Console.Write("Second Polynomial: ");
entry2 = System.Console.ReadLine();
polychoice2 = System.Convert.ToInt32(entry2);
//Add polynomials together and exit to main
temppoly = MyPolynomials.Retrieve(polychoice1 - 1) + MyPolynomials.Retrieve(polychoice2 - 1);
break;
}
//Any invalid user input prints a message and prompts
//them to select again.
catch
{
System.Console.WriteLine("Error, try again.");
}
}
//Add the polynomial to the list
if (temppoly.count > 0)
{
MyPolynomials.Insert(temppoly);
System.Console.Write("\nPolynomial Added: ");
temppoly.Print();
}
}
//User selects to multiply polynomials
if (entry.Equals("3"))
{
//temp variables
string entry2 = "";
int polychoice1 = 0;
int polychoice2 = 0;
//While the list is not empty
while (true && MyPolynomials.P.Count > 0)
{
try
{
System.Console.Write("First Polynomial: ");
entry2 = System.Console.ReadLine();
polychoice1 = System.Convert.ToInt32(entry2);
System.Console.Write("Second Polynomial: ");
entry2 = System.Console.ReadLine();
polychoice2 = System.Convert.ToInt32(entry2);
//Multiply polynomials and add it to new polynomial
temppoly = MyPolynomials.Retrieve(polychoice1 - 1) * MyPolynomials.Retrieve(polychoice2 - 1);
break;
}
//Invalid user input prints message and prompts
//to make another selection
catch
{
System.Console.WriteLine("Error, try again.");
}
}
//Add polynomial to list of polynomials
if (temppoly.count > 0)
{
MyPolynomials.Insert(temppoly);
System.Console.Write("\nPolynomial Added: ");
temppoly.Print();
}
}
//User deletes item
if (entry.Equals("4"))
{
//Temp variables
string entry2 = "";
int delchoice = 0;
//While there is something to delete in the list of polynomials
while (true && MyPolynomials.P.Count > 0)
{
try
{
System.Console.Write("Polynomial to Delete: ");
entry2 = System.Console.ReadLine();
delchoice = System.Convert.ToInt32(entry2);
System.Console.WriteLine("\nPolynomial deleted.");
//Delete Polynomial
MyPolynomials.Delete(delchoice);
break;
}
//Invalid user input returns error
//and for user to make another choice
catch
{
System.Console.WriteLine("Error, try again.");
}
}
}
//User wants to evaluate over a given x
if (entry.Equals("5"))
{
string entry2 = "";
double xchoice = 0;
int polychoice = 0;
//While the list of polynomials is not empty
while (true && MyPolynomials.P.Count > 0)
{
try
{
System.Console.Write("Polynomial to Evaluate: ");
entry2 = System.Console.ReadLine();
polychoice = System.Convert.ToInt32(entry2);
System.Console.Write("X Value: ");
entry2 = System.Console.ReadLine();
xchoice = System.Convert.ToDouble(entry2);
System.Console.Write("\nPolynomial{0}({1}) = ", polychoice, xchoice);
//Evalute the Term
System.Console.WriteLine(MyPolynomials.Retrieve(polychoice - 1).Evaluate(xchoice));
break;
}
//Invalid user input returns error message
//and prompts user to make another selection
catch
{
System.Console.WriteLine("Error, try again.");
}
}
}
//Print List to user
System.Console.WriteLine("\nYour polynomial list:");
MyPolynomials.Print();
System.Console.WriteLine("End of your polynomials\n");
}
}
static void Main(string[] args)
{
while (true)
{
Polynomials polynomials = new Polynomials();
polynomials.Print();
Console.Write("\n\n1) Create a polynomial\n2) Add two polynomials\n3) Multiply two polynomials\n4) Delete a polynomial\n5) Evaluate a polynomial\n\nSelect an option: ");
String option = Console.ReadLine();
int i = Convert.ToInt32(option);
int first = 0, second = 0;
Polynomial p = new Polynomial();
Polynomial q = new Polynomial();
Polynomial r = new Polynomial();
p = null;
q = null;
r = null;
switch (i)
{
case 1:
Console.Write("1: Enter a coefficient ");
double coefficient = Convert.ToDouble(Console.ReadLine());
Console.Write(" Enter an exponent ");
byte exponent = Convert.ToByte(Console.ReadLine());
break;
case 2:
Console.Write("2: Enter the index of the first polynomial ");
first = Convert.ToInt32(Console.ReadLine());
p = polynomials.Retrieve(first);
Console.Write(" Enter the index of the second polynomial ");
second = Convert.ToInt32(Console.ReadLine());
q = polynomials.Retrieve(second);
r = p + q;
r.Print();
break;
case 3:
Console.Write("3: Enter the index of the first polynomial ");
first = Convert.ToInt32(Console.ReadLine());
p = polynomials.Retrieve(first);
Console.Write(" Enter the index of the second polynomial ");
second = Convert.ToInt32(Console.ReadLine());
q = polynomials.Retrieve(second);
r = p + q;
r.Print();
break;
case 4:
Console.Write("4: Enter the index of polynomial you would like to delete ");
first = Convert.ToInt32(Console.ReadLine());
polynomials.Delete(first);
break;
case 5:
Console.Write("5: Enter the index of the polynomial you would like to evaluate ");
p = polynomials.Retrieve(first);
int x = 0;
Console.Write(" Enter the x value for the polynomial to be evaluated ");
x = Convert.ToInt32(Console.ReadLine());
p.Evaluate(x);
break;
default:
Console.WriteLine("Error, try entering a value from 1 - 5");
break;
}
}
}
// Creates an empty list of polynomials
public Polynomials()
{
Polynomials P = null;
}
