Question

write a Java program to print the sum and average of three numbers.

Answer 1

import java.util.Scanner;

public class Exercise2 {

public static void main(String[] args)

   {

       Scanner in = new Scanner(System.in);

       System.out.print("Input the first number: ");

       double x = in.nextDouble();

       System.out.print("Input the second number: ");

       double y = in.nextDouble();

       System.out.print("Input the third number: ");

       double z = in.nextDouble();

       System.out.print("The average value is " + average(x, y, z)+"\n" );

   }

 public static double average(double x, double y, double z)

   {

       return (x + y + z) / 3;

   }

}

Answer 2

Explanation:

public class Average {

public static void main(String[] args) {

// take two numbers

double num1 = 10;

double num2 = 15;

double num3 = 20;

// declare sum variable

// and initialize with 0

double sum = 0.0;

// declare average variable

double avg = 0.0;

// calculate the sum value

sum = num1 + num2 + num3;

// calculate the average value

avg = sum/3;

// display result

System.out.println("Average: " + avg );

}