typedef char TElemType;
typedef int Status;
typedef char SElemType;
//二叉树的二叉链表存储表示
typedef struct BiTNode
{
TElemType data;
BiTNode *lchild, *rchild; //左右孩子指针
} BiTNode, *BiTree;
typedef struct
{
BiTree *base;
BiTree *top;
int stacksize; //当前已分配的存储空间
} SqStack;
Status InitStack(SqStack &S)
Status GetTop(SqStack &S, BiTree &e)
Status Push(SqStack &S, BiTree e)
Status Pop(SqStack &S,BiTree &e)
Status StackEmpty(SqStack S)
