1. Using Java program: Write a simple program to sum data points. Create a Scann
ID: 3552906 • Letter: 1
Question
1. Using Java program: Write a simple program to sum data points. Create a Scanner object console to read data from the console. First read the number of data points to be summed. Then ask for each data point one at a time as you are accumulating the sum in a for loop. This only has a main method. You should not have any methods other than the main method. the sum is printed out using Sytem.out.printf() with a format of %.3f. Also notice that the prompt includes the current data point number (the value of i in the for loop) so the user knows exactly which data point to provide.
2. Using Java program: Write a simple program to take the product of a set of data points. Create a Scanner object
console to read data from the console. First read the number of data points to be multiplied together. Then ask for each data point one at a time as you are accumulating the product in a for loop. This ONLY has a main method. You should not have any methods other than the main method. Notice that the sum is printed out using Sytem.out.printf() with a format of %.3f. Also notice that the prompt includes the current data point number (the value of i in the for loop) so the user knows exactly which data point to provide
Explanation / Answer
import java.util.Scanner;
class sumNumbers
{
public static void main (String args[])
{
int dataPoint = 0;
int sum = 0;
Scanner input = new Scanner (System.in);
System.out.println("How many data point do you like to enter: ");
dataPoint = input.nextInt();
for (int i = 0; i < dataPoint; i++)
{
System.out.println("Please enter the value of data point " + (i + 1));
sum = sum + input.nextInt();
}
System.out.println("The sum is " + sum);
}
}
import java.util.Scanner;
class multipleNumbers
{
public static void main (String args[])
{
int dataPoint = 0;
int sum = 1;
Scanner input = new Scanner (System.in);
System.out.println("How many data point do you like to enter: ");
dataPoint = input.nextInt();
for (int i = 0; i < dataPoint; i++)
{
System.out.println("Please enter the value of data point " + (i + 1));
sum = sum * input.nextInt();
}
System.out.println("The product is " + sum);
}
}
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