position_stack.h


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#ifndef POSITION_STACK_H
#define POSITION_STACK_H

#define STACK_ERR_OVERFLOW 0xFFF01
#define STACK_ERR_UNDERFLOW 0xFFF02

struct Position
{
	int x;
	int y;
};

struct PositionStack
{
	int max_size;
	int top;
	struct Position *items;
};

struct PositionStack *create_pos_stack(int capacity);

void pos_stack_push(struct PositionStack *stack_pt, struct Position pos);

struct Position pos_stack_peek(struct PositionStack *stack_pt);

struct Position pos_stack_pop(struct PositionStack *stack_pt);

#endif