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#ifndef _COORD
#define _COORD
#include "types.h"
/*
* Does not check if s is a valid string representing. If input is
* untrusted, use coord_is_valid(char*) to check it.
*/
Coord coord_init(char*);
/*
* Returns 0 if c is the null coordinate
*/
int coord_is_null(Coord);
/*
* Returns 0 if the coordinate is between a1 and h8.
*/
int coord_is_valid(char*);
/*
* Returns the null Coordinate
*/
Coord coord_null();
/*
* Set Coord column
*/
Coord coord_set_col(Coord c, char col);
/*
* Set Coord row
*/
Coord coord_set_row(Coord c, char row);
/*
* Get Coord row
*/
char coord_get_row(Coord c);
/*
* Get Coord column
*/
char coord_get_col(Coord c);
/*
* Returns the next coordinate. Useful for traversing the board forwards.
*/
Coord coord_next(Coord);
/*
* Returns the previous coordinate. Useful for traversing the board backwards.
*/
Coord coord_prev(Coord);
#endif
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