public static void MainMenu()
{
WriteLine("Welcome to the Math assignment in C Sharp!");
WriteLine("Enter 1 to build a rectangle, 2 for a square, 3 for a triangle, 4 for an octagon or 5 for a times table.");
WriteLine("Or enter 0 to exit.");
var answer = ReadLine();
if (answer == "0")
{
WriteLine("Goodbye!");
Environment.Exit(0);
}
else if (answer == "1")
{
WriteLine("Enter the length of your rectangle: ");
double length = 0;
double width = 0;
try
{
length = Convert.ToDouble(ReadLine());
}
catch (SystemException)
{
WriteLine("Error! Invalid value. Going back to main menu...");
Menu.MainMenu();
}
WriteLine("Enter the width of your rectangle: ");
try
{
width = Convert.ToDouble(ReadLine());
}
catch (SystemException)
{
WriteLine("Error! Invalid value. Going back to main menu...");
Menu.MainMenu();
}
Rectangle rectangle = new Rectangle(length, width);
WriteLine("The area of your rectangle is " + rectangle.GetArea());
rectangle.AcceptDetails();
rectangle.Display();
rectangle.DisplayInfo();
Menu.MainMenu();
}
else if (answer == "2")
{
WriteLine("Enter the length and width of your square: ");
double length = 0;
try
{
length = Convert.ToDouble(ReadLine());
}
catch (SystemException)
{
WriteLine("Error. Invalid value specified. Returning to main menu...");
Menu.MainMenu();
}
var width = length;
Square square = new Square(length, width);
WriteLine("The area of your rectangle is " + square.GetArea());
square.AcceptDetails();
square.Display();
Menu.MainMenu();
}
else if (answer == "3")
{
WriteLine("Enter the length of your triangle: ");
double length = 0;
double width = 0;
try
{
length = Convert.ToDouble(ReadLine());
}
catch (SystemException)
{
WriteLine("Error! Invalid value. Going back to main menu...");
Menu.MainMenu();
}
WriteLine("Enter the width of your triangle: ");
try
{
width = Convert.ToDouble(ReadLine());
}
catch (SystemException)
{
WriteLine("Error! Invalid value. Going back to main menu...");
Menu.MainMenu();
}
Triangle triangle = new Triangle(length, width);
WriteLine("The area of your triangle is " + triangle.GetArea());
triangle.AcceptDetails();
triangle.Display();
Menu.MainMenu();
}
else if (answer == "4")
{
WriteLine("Enter the side length of your octagon: ");
double sidelength = 0;
try
{
sidelength = Convert.ToDouble(ReadLine());
}
catch (SystemException)
{
WriteLine("Error! Invalid value. Going back to main menu...");
Menu.MainMenu();
}
Octagon octagon = new Octagon(sidelength);
octagon.AcceptDetails();
octagon.Display();
Menu.MainMenu();
}
else if (answer == "5")
{
WriteLine("Please enter your value for a times table.");
double value = 0;
try
{
value = Convert.ToDouble(ReadLine());
}
catch (SystemException)
{
}
TimesTable table = new TimesTable(value);
table.Display();
Menu.MainMenu();
}
else
{
WriteLine("Invalid response! Try again.");
Menu.MainMenu();
}
}