#include <stdio.h>

#ifndef __STACK_H__
#define __STACK_H__
    #define MAX_STACK_SIZE 100
    typedef char ElemType;

    typedef struct{
        ElemType data[MAX_STACK_SIZE];
        int top;
    }SqStack;

    int Push( ElemType data, SqStack *stack );
    int Pop( ElemType *data, SqStack *stack );
#endif