package at.ac.fhstp.eidherr;

import java.util.Scanner;
import java.lang.Math;

public class Bsp5 {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        double a,b,c,a2,b2,c2;
        System.out.println("Enter length of side a: ");
        a=input.nextFloat();
        System.out.println("Enter length of side b: ");
        b=input.nextFloat();
        System.out.println("Enter length of side c: ");
        c=input.nextFloat();
//      a=Math.sqrt(12.5);
//      b=Math.sqrt(12.5);
//      c=5;
        a2=Math.pow(a, 2);
        b2=Math.pow(b, 2);
        c2=Math.pow(c, 2);
        a2=roundDown(a2);
        b2=roundDown(b2);
        c2=roundDown(c2);

        if(c>=a+b || a>=b+c || b>=a+c) {
            System.out.println("its not a triangle at all");
            System.exit(0);
        }
        else if(a==b && a==c) {
            System.out.println("its a same sided triangle");
        }
        else if(a2+b2==c2 && a==b) {
            System.out.println("its a right angled same sided triangle");
        }
        else if(a==b & a!=c) {
            System.out.println("its a same winged triangle");
        }
        else if((Math.pow(a, 2)+Math.pow(b, 2))==Math.pow(c, 2)) {
            System.out.println("its a right angled triangle");
        }
        else {
            System.out.println("its a regular triangle");
        }

        int u = (int) (a+b+c), s=u/2;
        double bigA = Math.sqrt((double)s*(s-a)*(s-b)*(s-c));

        System.out.printf("The circumverence of the triangle is %dcm, the surface area is %.2fcm² ", u, bigA);
        input.close();
    }

    public static double roundDown(double d) {
        return ((long)(d* 1e12))/1e12;
    }
}