two dimensional

write a program to create a 3*3 array and print the sum of all the numbers stored in it.

February 19, 2010 at 12:06 PM

Hi Friend,

Try the following code:

import java.io.*;
import java.util.*;

public class matrix {
public static void main(String[] args) throws IOException {
int rows, cols;
int sum=0;
int[][] matrix;
Scanner input = new Scanner(System.in);
System.out.print("Enter number of rows: ");
rows = input.nextInt();
System.out.print("Enter number of columns: ");
cols = input.nextInt();
matrix = new int[rows][cols];
System.out.println("Enter elements for Matrix");
for (int i = 0; i < rows; i++) {
for (int j = 0; j < cols; j++) {
matrix[i][j] = input.nextInt();
}
}
System.out.println("Matrix is: ");
for (int i = 0; i < rows; i++) {
for (int j = 0; j < cols; j++) {
sum+=matrix[i][j];
System.out.print(matrix[i][j]+" ");
}
System.out.println();

}
System.out.println("Sum of all elements is: "+sum);
}
}

Thanks

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