Changes

#include "cuda_runtime.h"

#include "device_launch_parameters.h"

// A Backtracking program in C++ to solve Sudoku problem

#include <stdio.h>

// UNASSIGNED is used for empty cells in sudoku grid

#define UNASSIGNED 0

// N is used for the size of Sudoku grid. Size will be NxN

#define BOXWIDTH 3

#define N 9

// This function finds an entry in grid that is still unassigned

bool FindUnassignedLocation(int grid[N][N], int &row, int &col);

// Checks whether it will be legal to assign num to the given row, col

__global__ void makeGuess(int* d_a, int guess, int row, int col) {

__shared__ bool found;

bool SolveSudoku(int grid[N][N], int* d_a, int row, int col)

{

// If there is no unassigned location, we are done

if (!FindUnassignedLocation(grid, row, col))

return true; // success!

int guess = 0;

while (guess <= N) {

return false; // this triggers backtracking

}

/* Searches the grid to find an entry that is still unassigned. If

found, the reference parameters row, col will be set the location

return false;

}

/* A utility function to print grid */

void printGrid(int grid[N][N])

}

}

/* Driver Program to test above functions */

int main()