Programming Example
Question 8
Study this program carefully to understand the logic, output, and explanation in a structured way.
Write a program to input and store integer elements in a double dimensional array of size 4×4 and find the sum of all the elements.
7 3 4 5
5 4 6 1
6 9 4 2
3 2 7 5
Sum of all the elements: 73
import java.util.Scanner;
public class RansariDDASum
{
public static void main(String args[]) {
Scanner in = new Scanner(System.in);
int arr[][] = new int[4][4];
long sum = 0;
System.out.println("Enter the elements of 4x4 array:");
for (int i = 0; i < 4; i++) {
for (int j = 0; j < 4; j++) {
arr[i][j] = in.nextInt();
}
}
for (int i = 0; i < 4; i++) {
for (int j = 0; j < 4; j++) {
sum += arr[i][j];
}
}
System.out.println("Sum of all the elements: " + sum);
}
}First read the algorithm, then study the program code line by line. After that, compare the code with the output and finally go through the explanation. This approach helps learners understand both the logic and the implementation properly.
After understanding this example, try to rewrite the same program without looking at the code. Then change some values or logic and run it again. This helps improve confidence and keeps learners engaged on the page for longer.