Question

How to add two matrices (matrix) in C++

Answer 1

#include <iostream>

using namespace std;

int main()
{
	int matrix1[][4] = { { 1, 1, 1, 1 },{ 2, 2, 2, 2 },{ 3, 3, 3, 3 } };
	int matrix2[][4] = { { 4, 4, 4, 4 },{ 5, 5, 5, 5 },{ 6, 6, 6, 6 } };
	int sum[][4] = { { 0, 0, 0, 0 },{ 0, 0, 0, 0 },{ 0, 0, 0, 0 } };

	int rows = sizeof(matrix1) / sizeof(matrix1[0]);
	int cols = sizeof(matrix1[0]) / sizeof(matrix1[0][0]);

	for (int i = 0; i < rows; i++)
		for (int j = 0; j < cols; j++)
			sum[i][j] = matrix1[i][j] + matrix2[i][j];

	for (int i = 0; i < rows; i++)
	{
		for (int j = 0; j < cols; j++)
			cout << sum[i][j];
		cout << endl;
	}
		
	return 0;
}


/*
run:

5555
7777
9999

*/

 

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