solver.h

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#ifndef SOLVER_H
#define SOLVER_H
 
#include <stddef.h>
 
/* -------------------------------------------------------------------------
 * Types
 * ---------------------------------------------------------------------- */

typedef struct {
    char  *cells;  
    int    rows;   
    int    cols;   
} CharGrid;

typedef struct {
    int found;    
    int start_r;  
    int start_c;  
    int end_r;    
    int end_c;    
    int dir;      
} WordResult;
 
/* -------------------------------------------------------------------------
 * Public API
 * ---------------------------------------------------------------------- */

CharGrid *grid_create(int rows, int cols);

void grid_fill(CharGrid *grid, const int *labels, size_t count);

CharGrid *grid_load(const char *path);

void grid_print(const CharGrid *grid);

void grid_free(CharGrid *grid);

WordResult solver_find(const CharGrid *grid, const char *word);

const char *solver_dir_name(int dir);
 
#endif /* SOLVER_H */