Proper use of rand()?

So the idea with this is that it takes in the 9x9 array that's in main, and swaps around rows. It can only swap rows 1-3 with 1-3, 4-6 with 4-6 and 7-9 with 7-9. For some reason every once in awhile it will swap one from 4-6 with one from 7-9, and also sometimes it will give me absolute garbage for one of the rows 7-9. I've spent the better part of 2 hours trying to figure out the proper way to use rand() in this context and I am sure I am not doing it correctly. Any ideas?

#include <iostream>
#include <time.h>
#include <stdlib.h>

using namespace std;

void printSudoku(int square[9][9]) // Prints out the 9x9 array
{
    for(int i = 0; i < 9; i++)
    {
        for(int j = 0; j < 9; j++)
        {
            cout << square[i][j];
        }
        cout << endl;
    }
}

void swapRows(int square[9][9]) // Randomly generates numbers, within bounds, and swaps those rows with each other
{
    int temp[1][9];
    srand(time(NULL));
    int n = (rand() % 2) + 0;
    int m = (rand() % 2) + 0;
    for(int i = 0; i < 9; i++)
    {
        temp[0][i] = square[n][i];
    }
    for(int j = 0; j < 9; j++)
    {
        square[n][j] = square[m][j];
    }
    for(int k = 0; k < 9; k++)
    {
        square[m][k] = temp[0][k];
    }
    int a = (rand() % 5) + 3;
    int b = (rand() % 5) + 3;
    for(int i = 0; i < 9; i++)
    {
        temp[0][i] = square[a][i];
    }
    for(int j = 0; j < 9; j++)
    {
        square[a][j] = square[b][j];
    }
    for(int k = 0; k < 9; k++)
    {
        square[b][k] = temp[0][k];
    }
    int c = (rand() % 8) + 6;
    int d = (rand() % 8) + 6;
    for(int i = 0; i < 9; i++)
    {
        temp[0][i] = square[c][i];
    }
    for(int j = 0; j < 9; j++)
    {
        square[c][j] = square[d][j];
    }
    for(int k = 0; k < 9; k++)
    {
        square[d][k] = temp[0][k];
    }
}


int main() {
int square[9][9] = {1,2,3,4,5,6,7,8,9,
                    4,5,6,7,8,9,1,2,3,
                    7,8,9,1,2,3,4,5,6,
                    2,3,4,5,6,7,8,9,1,
                    5,6,7,8,9,1,2,3,4,
                    8,9,1,2,3,4,5,6,7,
                    3,4,5,6,7,8,9,1,2,
                    6,7,8,9,1,2,3,4,5,
                    9,1,2,3,4,5,6,7,8,};
printSudoku(square);
swapRows(square);
cout << endl;
printSudoku(square);
    return 0;
}