順序棧實現

#define MAXSIZE 100

typedef struct
{
	char elem[MAXSIZE];
	int top;
}stStack;

void InitStack(stStack*& s);
int Push(stStack*& s, char e);
char Pop(stStack*& s);

int _tmain(int argc, _TCHAR* argv[])
{
	char e;
	stStack* s;
	InitStack(s);
	Push(s, 'a');
	Push(s, 'b');

	while(s->top>=0)
	{
		e = Pop(s);
		cout<<"e="<<e<<endl;
	}
	

	free s;
	system("pause");
	return 0;
}

void InitStack(stStack*& s)
{
	s = (stStack*)malloc(sizeof(stStack));
	s->top = -1;
}

int Push(stStack*& s, char e)
{
	if(s->top == MAXSIZE-1)
		return 0;
	s->top++;
	s->elem[s->top] = e;
	return 1;
}

char Pop(stStack*& s)
{
	char e;
	if(s->top == -1)
		return 0;
	e = s->elem[s->top];
	s->top --;
	return e;
}