Program for addition of two matrices
The below program adds two square matrices of size 4*4, we can change N for different dimensions.
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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 codeint 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 matricesclass 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 matricesN = 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 codeA = [ [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 resultadd(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 matricesusing 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?> |
Javascript
<script>// Javascript program for addition// of two matriceslet N = 4;// This function adds A[][] and B[][], and stores// the result in C[][]function add(A, B, C){ let 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 let A = [ [1, 1, 1, 1], [2, 2, 2, 2], [3, 3, 3, 3], [4, 4, 4, 4]]; let B = [ [1, 1, 1, 1], [2, 2, 2, 2], [3, 3, 3, 3], [4, 4, 4, 4]]; // To store result let C = new Array(N); for (let k = 0; k < N; k++) C[k] = new Array(N); let i, j; add(A, B, C); document.write("Result matrix is <br>"); for (i = 0; i < N; i++) { for (j = 0; j < N; j++) document.write(C[i][j] + " "); document.write("<br>"); }</script> |
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.
