//MAGSUMBOL, ANDREA JESSELLE S

//MAGALONG, CLAIRE ANNE S

//CCP 1103 - ITBC

//AREA OF VARIOUS GEOMETRICAL SHAPE

​

using System;

​

namespace AreaOfVariousGeometricalShape

{

    public class MainClass

    {

        public static void Main(string[] args)

        {

            int intInput;

​

            Console.WriteLine("Area of various geometrical shape\n");

            Console.WriteLine("Select option\n[1] Area of Circle\n[2] Area of Rectangle\n[3] Area of Triangle");

            Console.Write("Enter your option: ");

            String option = Console.ReadLine();

​

            if (int.TryParse(option, out intInput) == true)

            {

                double doubleRadiusCircle;

                double doubleLengthRectangle;

                double doubleWidthRectangle;

                double doubleBaseTriangle;

                double doubleHeightTriangle;

​

                switch (intInput)

                {

                    case 1:

​

                        Console.Write("Enter radius of the circle: ");

                        String radius = Console.ReadLine();

​

                        if (double.TryParse(radius, out doubleRadiusCircle) == true)

                        {

                            if (doubleRadiusCircle > 0)

                            {

                                double area = 3.1416 * (doubleRadiusCircle * doubleRadiusCircle);

                                Console.Write("\nThe area of the circle is {0:#,0.0000}.", area);

                            }

                            else

                            {

                                Console.WriteLine("Input error. Please input a positive value of radius.");

                            }

                        }

                        else

                        {

                            Console.WriteLine("Invalid radius.");

                        }

                        break;

​

                    case 2:

​

                        Console.Write("Enter length of the rectangle: ");

                        String lengthRectangle = Console.ReadLine();

​

                        if (double.TryParse(lengthRectangle, out doubleLengthRectangle) == true)

                        {

                            if (doubleLengthRectangle > 0)

                            {

                                Console.Write("Enter width of the rectangle: ");

                                String widthRectangle = Console.ReadLine();

​

                                if (double.TryParse(widthRectangle, out doubleWidthRectangle) == true)

                                {

                                    if (doubleWidthRectangle > 0)

                                    {

                                        double area = doubleWidthRectangle * doubleLengthRectangle;

                                        Console.Write("\nThe area of the rectangle is {0:#,0.0000}.", area);

                                    }

                                    else

                                    {

                                        Console.WriteLine("Input error. Please input a positive value of width.");

                                    }

                                }

                                else

                                {

                                    Console.WriteLine("Invalid width.");

                                }

                            }

                            else

                            {

                                Console.WriteLine("Input error. Please input a positive value of length.");

                            }

                        }

                        else

                        {

                            Console.WriteLine("Invalid length.");

                        }

                        break;

​

                    case 3:

​

                        Console.Write("Enter base of the triangle: ");

                        String widthTriangle = Console.ReadLine();

​

                        if (double.TryParse(widthTriangle, out doubleWidthRectangle) == true)

                        {

                            if (doubleWidthRectangle > 0)

                            {

                                Console.Write("Enter height of the triangle: ");

                                String heightTriangle = Console.ReadLine();

​

                                if (double.TryParse(heightTriangle, out doubleHeightTriangle) == true)

                                {

                                    if (doubleHeightTriangle > 0)

                                    {

                                        double area = 0.5 * doubleWidthRectangle * doubleHeightTriangle;

                                        Console.Write("\nThe area of the triangle is {0:#,0.0000}.", area);

                                    }

                                    else

                                    {

                                        Console.WriteLine("Input error. Please input a positive value of height.");

                                    }

                                }

                                else

                                {

                                    Console.WriteLine("Invalid height.");

                                }

                            }

                            else

                            {

                                Console.WriteLine("Input error. Please input a positive value of base.");

                            }

                        }

                        else

                        {

                            Console.WriteLine("Invalid base.");

                        }

                        break;

​

                    default:

​

                        Console.Write("Select from 1-3 only.");

                        break;

                }

            }

            else

            {

                Console.Write("Invalid input.");

            }

        }

    }

}

​