The below program adds two square matrices of size 4*4, we can change N for different dimension.
C++
// C++ program for addition // of two matrices #include <bits/stdc++.h> using namespace std; #define N 4 // This function adds A[][] and B[][], and stores // the result in C[][] void add( int A[][N], int B[][N], int C[][N]) { int i, j; for (i = 0; i < N; i++) for (j = 0; j < N; j++) C[i][j] = A[i][j] + B[i][j]; } // Driver code int main() { int A[N][N] = { {1, 1, 1, 1}, {2, 2, 2, 2}, {3, 3, 3, 3}, {4, 4, 4, 4}}; int B[N][N] = { {1, 1, 1, 1}, {2, 2, 2, 2}, {3, 3, 3, 3}, {4, 4, 4, 4}}; int C[N][N]; // To store result int i, j; add(A, B, C); cout << "Result matrix is " << endl; for (i = 0; i < N; i++) { for (j = 0; j < N; j++) cout << C[i][j] << " " ; cout << endl; } return 0; } // This code is contributed by rathbhupendra |
C
#include <stdio.h> #define N 4 // This function adds A[][] and B[][], and stores // the result in C[][] void add( int A[][N], int B[][N], int C[][N]) { int i, j; for (i = 0; i < N; i++) for (j = 0; j < N; j++) C[i][j] = A[i][j] + B[i][j]; } int main() { int A[N][N] = { {1, 1, 1, 1}, {2, 2, 2, 2}, {3, 3, 3, 3}, {4, 4, 4, 4}}; int B[N][N] = { {1, 1, 1, 1}, {2, 2, 2, 2}, {3, 3, 3, 3}, {4, 4, 4, 4}}; int C[N][N]; // To store result int i, j; add(A, B, C); printf ( "Result matrix is \n" ); for (i = 0; i < N; i++) { for (j = 0; j < N; j++) printf ( "%d " , C[i][j]); printf ( "\n" ); } return 0; } |
Java
// Java program for addition // of two matrices class GFG { static final int N = 4 ; // This function adds A[][] and B[][], and stores // the result in C[][] static void add( int A[][], int B[][], int C[][]) { int i, j; for (i = 0 ; i < N; i++) for (j = 0 ; j < N; j++) C[i][j] = A[i][j] + B[i][j]; } // Driver code public static void main (String[] args) { int A[][] = { { 1 , 1 , 1 , 1 }, { 2 , 2 , 2 , 2 }, { 3 , 3 , 3 , 3 }, { 4 , 4 , 4 , 4 }}; int B[][] = { { 1 , 1 , 1 , 1 }, { 2 , 2 , 2 , 2 }, { 3 , 3 , 3 , 3 }, { 4 , 4 , 4 , 4 }}; // To store result int C[][] = new int [N][N]; int i, j; add(A, B, C); System.out.print( "Result matrix is \n" ); for (i = 0 ; i < N; i++) { for (j = 0 ; j < N; j++) System.out.print(C[i][j] + " " ); System.out.print( "\n" ); } } } // This code is contributed by Anant Agarwal. |
Python3
# Python3 program for addition # of two matrices N = 4 # This function adds A[][] # and B[][], and stores # the result in C[][] def add(A,B,C): for i in range (N): for j in range (N): C[i][j] = A[i][j] + B[i][j] # driver code A = [ [ 1 , 1 , 1 , 1 ], [ 2 , 2 , 2 , 2 ], [ 3 , 3 , 3 , 3 ], [ 4 , 4 , 4 , 4 ]] B = [ [ 1 , 1 , 1 , 1 ], [ 2 , 2 , 2 , 2 ], [ 3 , 3 , 3 , 3 ], [ 4 , 4 , 4 , 4 ]] C = A[:][:] # To store result add(A, B, C) print ( "Result matrix is" ) for i in range (N): for j in range (N): print (C[i][j], " " , end = '') print () # This code is contributed # by Anant Agarwal. |
C#
// C# program for addition // of two matrices using System; class GFG { static int N = 4; // This function adds A[][] and B[][], and stores // the result in C[][] static void add( int [,] A, int [,]B, int [,]C) { int i, j; for (i = 0; i < N; i++) for (j = 0; j < N; j++) C[i,j] = A[i,j] + B[i,j]; } // Driver code public static void Main () { int [,]A = { {1, 1, 1, 1}, {2, 2, 2, 2}, {3, 3, 3, 3}, {4, 4, 4, 4}}; int [,]B = { {1, 1, 1, 1}, {2, 2, 2, 2}, {3, 3, 3, 3}, {4, 4, 4, 4}}; // To store result int [,]C = new int [N,N]; int i, j; add(A, B, C); Console.WriteLine( "Result matrix is " ); for (i = 0; i < N; i++) { for (j = 0; j < N; j++) Console.Write(C[i,j] + " " ); Console.WriteLine(); } } } // This code is contributed by vt_m. |
PHP
<?php // This function adds A[][] and // B[][], and stores the result in C[][] function add(& $A , & $B , & $C ) { $N = 4; for ( $i = 0; $i < $N ; $i ++) for ( $j = 0; $j < $N ; $j ++) $C [ $i ][ $j ] = $A [ $i ][ $j ] + $B [ $i ][ $j ]; } // Driver code $A = array ( array (1, 1, 1, 1), array (2, 2, 2, 2), array (3, 3, 3, 3), array (4, 4, 4, 4)); $B = array ( array (1, 1, 1, 1), array (2, 2, 2, 2), array (3, 3, 3, 3), array (4, 4, 4, 4)); $N = 4; add( $A , $B , $C ); echo "Result matrix is \n" ; for ( $i = 0; $i < $N ; $i ++) { for ( $j = 0; $j < $N ; $j ++) { echo $C [ $i ][ $j ]; echo " " ; } echo "\n" ; } // This code is contributed // by Shivi_Aggarwal ?> |
Output:
Result matrix is 2 2 2 2 4 4 4 4 6 6 6 6 8 8 8 8
The program can be extended for rectangular matrices. The following post can be useful for extending this program.
How to pass a 2D array as a parameter in C?
The time complexity of the above program is O(n2).
The auxiliary space of the above problem is O(n2)
Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above.
Attention reader! Don’t stop learning now. Get hold of all the important DSA concepts with the DSA Self Paced Course at a student-friendly price and become industry ready.