|  | #ifndef SUDOKU_H
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							|  | #define SUDOKU_H
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							|  | typedef struct field_t {
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							|  | 	unsigned int value;
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							|  | 	unsigned int selected;
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							|  | 	unsigned int initial;
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							|  | 	unsigned int column;
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							|  | 	unsigned int row;
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							|  | 	unsigned int index;
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							|  | 	unsigned char box;
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							|  | } field_t;
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							|  | 
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							|  | field_t * new_field(){
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							|  | 	field_t * field = (field_t *)calloc(1,sizeof(field_t));
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							|  | 	return field;
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							|  | }
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							|  | 
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							|  | typedef struct row_t {
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							|  | 	unsigned int index;
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							|  | 	field_t * columns;
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							|  | 	unsigned int column_count;
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							|  | } row_t; 
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							|  | 
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							|  | row_t * new_row(unsigned int size) {
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							|  | 	row_t * row = (row_t *)calloc(1, sizeof(row));
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							|  | 	row->columns = calloc(size,sizeof(field_t));
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							|  | 	row->index = 0;
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							|  | 	return row;
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							|  | }
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							|  | 
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							|  | typedef struct grid_t {
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							|  | 	unsigned int size;
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							|  | 	unsigned int row_count;
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							|  | 	unsigned int field_count;
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							|  | 	row_t * rows;
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							|  | 	field_t * fields;
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							|  | 	field_t * (*get)(struct grid_t * grid, unsigned int row, unsigned int col);
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							|  | 	field_t * (*get_empty_field)(struct grid_t * grid);
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							|  | } grid_t;
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							|  | 
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							|  | field_t * grid_get(grid_t * grid, unsigned int row, unsigned int col){
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							|  | 	return &grid->rows[row].columns[col];
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							|  | }
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							|  | field_t * grid_get_empty_field(grid_t *  grid){
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							|  | 	for(int i = 0; i < grid->size * grid->size; i++){
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							|  | 		printf("AT:%d\n",i);
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							|  | 		printf("V:%d\n",grid->fields[i].value);
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							|  | 		printf("V2:%d\n",grid->rows[i].columns[i].value);
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							|  | 		printf("V2:%d\n",grid->get(grid,i,i)->value);
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							|  | 		if(grid->fields[i].value == 0)
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							|  | 			return &grid->fields[i];
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							|  | 	}
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							|  | 	return NULL;
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							|  | }
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							|  | 
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							|  | char get_box_letter(grid_t * grid, unsigned int row, unsigned int col){
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							|  | 	//char box_letter = 65 + (row)*grid->size / grid->size / 3 + row;  // (row*grid->size+col)+(grid->size / 3);// + grid->size % (grid->size / 3));
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							|  | 	char box_letter = 65 + ((row % (grid->size / 3))) + grid->size % (grid->size / 3);// (row-1)*grid->size+(col-1)+(row-1)+(col-1); 
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							|  | 		//(65 + row * (grid->size / 3) % (grid->size / 3)+col);  /// (grid->size / 3));
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							|  | 	return box_letter;
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							|  | }
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							|  | 
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							|  | 
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							|  | grid_t * new_grid(unsigned int size){
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							|  | 	grid_t * grid = (grid_t *)calloc(1,sizeof(grid_t));
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							|  | 	grid->get = grid_get;
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							|  | 	grid->get_empty_field = grid_get_empty_field;
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							|  | 	grid->size = size;
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							|  | 	grid->row_count = 0;
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							|  | 	grid->rows = (row_t *)calloc(size, sizeof(row_t));
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							|  | 	grid->fields = (field_t *)calloc(size*size, sizeof(field_t));
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							|  | 	for(unsigned int irow = 0; irow < size; irow++){
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							|  | 		row_t * row = new_row(size);
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							|  | 		row->index = grid->row_count;
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							|  | 		row->column_count = size;
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							|  | 		grid->row_count++;
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							|  | 		grid->rows[row->index] = *row;
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							|  | 		for(unsigned int icol = 0; icol < size; icol++){
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							|  | 			unsigned int field_index = irow * size + icol;
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							|  | 			field_t * field = new_field();
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							|  | 			field->column = icol;
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							|  | 			field->row = irow;
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							|  | 			field->index = field_index;
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							|  | 			field->box = get_box_letter(grid, irow, icol);
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							|  | 			row->columns[icol] = *field;
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							|  | 			grid->fields[field_index] = *field;
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							|  | 			grid->field_count++;
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							|  | 		}
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							|  | 	}
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							|  | 	return grid;
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							|  | }
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							|  | #endif
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