Question

Write a small JAVA program that continually reads in user values and calculates the average of all values. The program should first ask the user for the number of values to be entered. Upon storing this value, the program should proceed to read in that amount of values.

What will be the best strategy here? a suggestion would be only calculating the average after you know you have read in all values. You can expect to use some type of loop to continually read in the values.

Hint:     Since we will know specifically how many values we need to read, a for-loop may be the best fit.

Answer 1

import java.util.*;
public class Main
{
//strategy is
//first read the number of values to be read
//then read them by one by one and add them to a variable called sum
//now after completely reading and adding them to sum
//divide the sum by number of values
//and display the result
//only one loop is enough
public static void main(String[] args) {

System.out.println("Enter nunber of values to read :");
int n;
Scanner sc = new Scanner(System.in);//to readinput
n=sc.nextInt();
double sum=0;
int k;
System.out.println("Enter "+n+" values:");
for(int i=0;i<n;i++)
{
k=sc.nextInt();
sum+=k;
}
double averge = sum/n;
System.out.println("Average :"+averge);

}
}