Homework (Pravougulnik)

import java.util.Scanner;

public class Pravougulnik1 {

    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);
        double a = scan.nextDouble();
        System.out.println("a:" + a);
        double b = scan.nextDouble();
        System.out.println("b:" + b);
        double P = 2 * (a + b);
        double S = a*b;
        System.out.println("P=" + P);
        System.out.println("S=" + S);


    }

}