Add Matrix

package org.interview.test;

import java.util.Scanner;

public class AddMatrix {
public static void main(String args[])
  {
     int m, n, c, d;
     Scanner in = new Scanner(System.in);
 
     System.out.println("Enter the number of rows and columns of matrix");
     m = in.nextInt();
     n  = in.nextInt();
 
     int first[][] = new int[m][n];
     int second[][] = new int[m][n];
     int sum[][] = new int[m][n];
 
     System.out.println("Enter the elements of first matrix");
 
     for (  c = 0 ; c < m ; c++ )
        for ( d = 0 ; d < n ; d++ )
           first[c][d] = in.nextInt();
 
     System.out.println("Enter the elements of second matrix");
 
     for ( c = 0 ; c < m ; c++ )
        for ( d = 0 ; d < n ; d++ )
           second[c][d] = in.nextInt();
 
     for ( c = 0 ; c < m ; c++ )
        for ( d = 0 ; d < n ; d++ )
            sum[c][d] = first[c][d] + second[c][d];  //replace '+' with '-' to subtract matrices
 
     System.out.println("Sum of entered matrices:-");
 
     for ( c = 0 ; c < m ; c++ )
     {
        for ( d = 0 ; d < n ; d++ )
           System.out.print(sum[c][d]+"\t");
 
        System.out.println();
     }
  }
}