Question

How to pass 2D array (matrix) to function in C++

Answer 1

#include <iostream>

using std::cout;
using std::endl;

void print_matrix(int matrix[][5], int rows, int cols)
{
	for (int i = 0; i < rows; i++) {
		for (int j = 0; j < cols; j++)
			cout << matrix[i][j] << "  ";
		cout << endl;
	}
}

int main()
{
	int matrix[][5] = { { 12, 43, 65, 10, 12 },
	                    { 33, 42, 98, 80, 50 },
	                    { 88, 77, 99, 100, 9843 } };

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

	print_matrix(matrix, rows, cols);

	return 0;
}



/*
run:

12  43  65  10  12
33  42  98  80  50
88  77  99  100  9843

*/

 

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