import java.util.Scanner;
public class AreaFinder
{
    public static void main (String [] args)
    {
        int count = 1;
        String exit = "yes";
        do
        {
            System.out.println("To find area of rectangle, press r.\nTo find area of triangle, press t.\nTo find area of circle, press c.");
            Scanner in = new Scanner (System.in);
            String userinput = in.nextLine();

            if(userinput.equals("c"))
            {
                System.out.println("\nPlease type the radius.");
                double radius;
                radius = in.nextDouble ();
                double areaC = (radius*radius)*Math.PI;
                System.out.println("\nThe area of a circle with radius " + radius + " is: \n" + areaC);
            }

            else if(userinput.equals("r"))
            {
                System.out.println("\nPlease type length and width as l w.");
                double length, width;
                length = in.nextDouble ();
                width = in.nextDouble ();
                double areaR = (length*width);
                System.out.println("\nThe area of a rectangle with length:" + length + " and width:" + width + " is: \n" + areaR);
            }

            else if(userinput.equals("t"))
            {
                System.out.println("\nPlease type base and height as b h.");
                double base, height;
                base = in.nextDouble ();
                height = in.nextDouble ();
                double areaT = (base*height)/2;
                System.out.println("\nThe area of a triangle with base:" + base + " and height:" + height + " is: \n" + areaT);
            }

            else
            {
                System.out.println("Please type r t or c dummy.");
            }


            System.out.println("Would you like to do another problem(yes/no)");
            exit = in.next();
            //Program will preform as long as exit is "yes"
        }
        while (exit.contains("yes"));
    }
}