Question

Write a Java program to find sum and average of three
numbers.

Answer 1

Required program:

import java.util.*;

public class Numbers

{

public static void main (String[]args)

{

Scanner sc = new Scanner (System.in);

int a,b,c;

int sum;

double avg;

System.out.println("Enter 1 number: ");

a=sc.nextInt();

System.out.println("Enter 2 number: ");

b=sc.nextInt();

System.out.println("Enter 3 number: ");

c=sc.nextInt();

sum = a + b + c;

System.out.println(" Sum of three numbers is:" + sum);

avg = sum/3;

System.out.println(" Average of three numbers is:" + avg);

}

}

Input:

Enter 1 number:

45

Enter 2 number:

34

Enter 3 number:

67

Output:

Enter 1 number:

45

Enter 2 number:

34

Enter 3 number:

67

Sum of three numbers is: 146

Average of three numbers is : 48.6666666667

Answer 2

Hope it helps ^_^

import java.util.*;

public class AverageCalculator {

   public static void main (String [] args) {

       //Taking input from the user

       Scanner sc = new Scanner(System.in);

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

       double num1 = sc.nextDouble();

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

       double num2 = sc.nextDouble();

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

       double num3 = sc.nextDouble();

       //Main part comes here

       double Average = (num1 + num2 + num3) / 3;

       double sum = num1 + num2 + num3;

       System.out.println("The sum of the following numbers is " + sum);

       System.out.println("The average of the given numbers is " + Average);

   }

}

Output:

Enter the first number: 30

Enter the second number: 31

Enter the third number: 28

The sum of the following numbers is 89.0

The average of the given numbers is 29.666666666666668