Matrix Addition -Java Program

/*
Developed by deepak anand.
For more programs,
visit programming-stuff-4-u.blogspot.in
*/
import java.util.Scanner;

class AddMatrix
{
   public static void main(String args[])
   {
      int m, n, c, d;
      Scanner s = new Scanner(System.in);

      System.out.println("Enter the number of rows and columns of matrix");
      m = s.nextInt();
      n  = s.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();
      }
   }
}