add two matrices

1. package com.instanceofjava;
2.  
3. import java.util.Scanner;
4.  
5. class Add2Matrix
6. {
7.  
8.    public static void main(String args[])
9.    {
10.  
11.       int rows, cols, c, d;
12.  
13.       Scanner in = new Scanner(System.in);
14.  
15.       System.out.println("Please Enter number of rows and columns");
16.  
17.       rows = in.nextInt();
18.       cols  = in.nextInt();
19.  
20.       int first[][] = new int[rows][cols];
21.       int second[][] = new int[rows][cols];
22.       int sum[][] = new int[rows][cols];
23.  
24.       System.out.println("Please Enter elements of first matrix");
25.  
26.       for (  c = 0 ; c < rows ; c++ )
27.          for ( d = 0 ; d < cols ; d++ )
28.             first[c][d] = in.nextInt();
29.  
30.       System.out.println("Please Enter elements of second matrix");
31.  
32.       for ( c = 0 ; c < rows ; c++ )
33.          for ( d = 0 ; d < cols ; d++ )
34.             second[c][d] = in.nextInt();
35.  
36.       for ( c = 0 ; c < rows ; c++ )
37.          for ( d = 0 ; d < cols ; d++ )
38.              sum[c][d] = first[c][d] + second[c][d];  //replace '+' with '-' to subtract matrices
39.  
40.       System.out.println("Sum of entered matrices:-");
41.  
42.       for ( c = 0 ; c < rows ; c++ )
43.       {
44.          for ( d = 0 ; d < cols ; d++ )
45.             System.out.print(sum[c][d]+"\t");
46.          System.out.println();
47.       }
48.    }
49. 
    
50.  }
51.    
     

 

Output:

1. Please Enter number of rows and columns
2.  
3. 3
4. 3
5.  
6. Please Enter elements of first matrix
7.  
8. 1 1 1
9. 1 1 1
10. 1 1 1
11.  
12. Please Enter elements of second matrix
13.  
14. 2 2 2
15. 2 2 2
16. 2 2 2
17.  
18. Sum of entered matrices:-
19.  
20. 3    3    3    
21. 3    3    3    
22. 3    3    3  

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