import java.util.Scanner;

public class LabExer1 {
    public static void main(String[] args) throws Exception {
        System.out.println("Enter two numbers.");
        Scanner scanner = new Scanner(System.in);

        // input 4.5, 30.0
        System.out.print("Fist number: ");
        double num1 = scanner.nextDouble();

        System.out.print("Second number: ");
        double num2 = scanner.nextDouble();

        plusFive(num1, num2);
        timesTwo(num1, num2);
        showSquared(num1, num2);
        computePercentage(num1, num2);
    }

    public static void plusFive(double num1, double num2) {
        System.out.println(num1 + 5 + " and " + num2 + 5);
    }

    public static void timesTwo(double num1, double num2) {
        System.out.println(num1 * 2 + " and " + num2 * 2);
    }

    public static void showSquared(double num1, double num2) {
        System.out.println(num1 * num1 + " and " + num2 * num2);
    }

    public static void computePercentage(double num1, double num2) {
        // OUTPUT: 4.5 is 15 percent of 30.0
        double percentage = (num1 / num2) * 100;
        System.out.println(num1 + " is " + percentage + " percent of " + num2);

    }
}