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#ifndef __STACK_H__
#define __STACK_H__

#define STACK_SIZE 100

struct stack_st {
    int len;
    int size;
    int* arr;
};

void stackPush(struct stack_st *s, int val);
int stackPop(struct stack_st *s);
int stackIsEmpty(struct stack_st *s);
int stackPeek(struct stack_st *s);
void stackPrint(struct stack_st *s);

void stackFree(struct stack_st *s);

#endif