#include?
using?namespace?std;
int?trueforever=0;//初始化為永真
int?falseforever=0;//初始化為永假

struct??BTnode?
{
????????int?data;
????????BTnode?*Lchild;
????????BTnode?*Rchild;
};
????
template?
class?SqStack
????{
????public:
????????SqStack（int?m）;
????????~SqStack（）
		{?
????????????delete[]base;
????????}
????????bool?StackEmpty（）
		{
???????????return（base==Top）;?
????????}
????????void?ClearStack（）
		{
????????????Top=base;
????????}
????????bool?GetTop（ElemType?&e）;
????????bool?Push（const?ElemType?&e）;
????????bool?Pop（ElemType?&e）;
????private:??
????????int?StackSize;
????????ElemType?*base;
????????ElemType?*Top;
};
??
template?
SqStack::SqStack（int?m）
{
????Top=base=new?ElemType[m];
????Stac