transpose function example in c++

#include <iostream>
using namespace std;

void transpose(int arr[3][3]) {
    int temp;
    for (int i = 0; i < 3; i++) {
        for (int j = i; j < 3; j++) {
            temp = arr[i][j];
            arr[i][j] = arr[j][i];
            arr[j][i] = temp;
        }
    }
}

int main() {
    int arr[3][3] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
    transpose(arr);
    for (int i = 0; i < 3; i++) {
        for (int j = 0; j < 3; j++) {
            cout << arr[i][j] << " ";
        }
        cout << endl;
    }
    return 0;
}