Rotate Image (N X N Array)

#1

https://hack.codingblocks.com/contests/c/452/439
http://ide.codingblocks.com/#/s/21983

#2

You have to take array as input.
See this code.
LINK: http://ide.codingblocks.com/#/s/22125

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

int R,C;
void reverseColumns(int arr[1000][1000])
{
for (int i = 0; i < C; i++)
for (int j = 0, k = R - 1; j < k; j++, k–)
swap(arr[j][i], arr[k][i]);
}

void transpose(int arr[1000][1000])
{
for (int i = 0; i < R; i++)
for (int j = i; j < C; j++)
swap(arr[i][j], arr[j][i]);
}

void printMatrix(int arr[1000][1000])
{
for (int i = 0; i < R; i++) {
for (int j = 0; j < C; j++)
cout << arr[i][j] << " ";
cout << ‘\n’;
}
}

void rotate90(int arr[1000][1000])
{
transpose(arr);
reverseColumns(arr);
}

int main()
{
int N;
cin>>N;
R=N;C=N;

int arr[1000][1000];
for(int i=0;i<N;i++)
    for(int j=0;j<N;j++)
        cin>>arr[i][j];
rotate90(arr);
printMatrix(arr);
return 0;

}