Rotate a matrix by 90 degree

#include <bits/stdc++.h>
using namespace std;

#define N 4

void rotate90Clockwise(int arr[N][N])
{
	for (int j = 0; j < N; j++) 
	{
		for (int i = N - 1; i >= 0; i--)
			cout << arr[i][j] << " ";
		cout << '\n';
	}
}

int main()
{
	int arr[N][N];
	for(int i=0;i<N;i++)
	    for(int j=0;j<N;j++)
	        cin>>arr[i][j];
	        
	rotate90Clockwise(arr);
	return 0;
}