// RAMOS, JOHN DEXTER C

// TAUP, NORSIMA G

// CCP 1103 - ITCC

// AREA OF VARIOUS GEOMETRICAL SHAPE

​

using System;

public class GeometricalShape

{

    public static void Main()

    {

        string optionInput;

        int optionInt;

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

        Console.WriteLine("---------------------------------\n");

        Console.WriteLine("Select an option.");

        Console.WriteLine("[1] Area of Circle");

        Console.WriteLine("[2] Area of Rectangle");

        Console.WriteLine("[3] Area of Triangle ");

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

        optionInput = Console.ReadLine();

        if(Int32.TryParse(optionInput, out optionInt) == true)

        {

            switch(optionInt)

            {

                case 1:

                    string circleInput;

                    double circleInt;

                    double circleRadius;

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

                    circleInput = Console.ReadLine();

                    if (double.TryParse(circleInput, out circleInt) == true)

                    {

                        if (circleInt > 0)

                        {

                            circleRadius = 3.1416*circleInt*circleInt;

                            Console.WriteLine("The area of the circle is {0:#,0.0000}", circleRadius);

                        }

                        else

                        {

                            Console.WriteLine("Input error. Zero or negative value of radius is not allowed.");

                        }

                    }

                    else

                    {

                            Console.WriteLine("Invalid radius. Please input a valid value of radius.");

                    }

                    break;

                case 2:

                    string lengthInput;

                    string widthInput;

                    double area;

                    double lengthInt;

                    double widthInt;

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

                    lengthInput = Console.ReadLine();

                    if (double.TryParse(lengthInput, out lengthInt) == true)

                    {

                        if (lengthInt > 0)

                        {

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

                            widthInput = Console.ReadLine();

                            if (double.TryParse(widthInput, out widthInt) == true)

                            {

                                if (widthInt > 0)

                                {

                                    area = lengthInt*widthInt;

                                    Console.WriteLine("The area of the rectangle is {0:#,0.0000}", area);

                                }

                                else

                                {

                                    Console.WriteLine("Input error. Zero or negative value of width is not allowed.");

                                }

                            }

                            else

                            {

                                Console.WriteLine("Invalid width. Please input a valid value of width.");

                            }

                        }

                        else

                        {

                            Console.WriteLine("Input error. Zero or negative value of length is not allowed.");

                        }

                    }

                    else

                    {

                        Console.WriteLine("Invalid length. Please input a valid value of length.");

                    }

                    break;

                case 3:

                    string baseInput;

                    string heightInput;

                    double baseInt;

                    double heightInt;

                    double areaTriangle;

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

                    baseInput = Console.ReadLine();

                    if (double.TryParse(baseInput, out baseInt) == true)

                    {

                        if (baseInt > 0)

                        {

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

                            heightInput = Console.ReadLine();

                            if (double.TryParse(heightInput, out heightInt) == true)

                            {

                                if (heightInt > 0)

                                {

                                    areaTriangle = baseInt * heightInt / 2;

                                    Console.WriteLine("The area of the triangle is {0:#,0.0000}", areaTriangle);

                                }

                                else

                                {

                                    Console.WriteLine("Input error. Zero or negative value of height is not allowed.");

                                }

                            }

                            else

                            {

                                 Console.WriteLine("Invalid height. Please input a valid value of height.");

                            }

                        }

                        else

                        {

                              Console.WriteLine("Input error. Zero or negative value of base is not allowed.");

                        }

                    }

                    else

                    {

                          Console.WriteLine("Please input a valid Input.");

                    }

                    break;

                default:

                        Console.WriteLine("Input error. Please select from 1-3 only.");

                    break;

                }

            }

        else

            {

                Console.WriteLine("Invalid option. Please select from 1-3 only.");

            }

    }

}

​

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