谁帮我看看这个编译错误怎么改。谢谢
#include<iostream>using namespace std;
class ThreadNode //节点类
{
private:
int LThread,RThread; //线索域
ThreadNode * left; //若有左子节点,指向它,否则,中根前驱节点
ThreadNode * right; //若有右节点,指向它,否则,中根后驱节点
int data;
public:
ThreadNode (const int item):data(item),left(NULL),right(NULL),LThread(0),RThread(0) {}
ThreadNode *GetLeft(void) const {return left;}
ThreadNode *GetRight(void) const {return right;}
void SetLeft(ThreadNode *t) {left=t;}
void SetRight(ThreadNode *t) {right=t;}
void SetData(const int item) {data=item;}
int & GetData (){return data;}
void SetLThread(const int d){LThread=d;}
void SetRThread(const int d){RThread=d;}
int GetLThread(){return LThread;}
int GetRThread(){return RThread;}
};
class ThreadInTree //中序线索二叉树类声明
{
private:
ThreadNode *root; //表头节点
int stop;
ThreadNode *pre; //中序二叉树的线索化。
public:
ThreadInTree(ThreadNode * t){root=t;}
ThreadNode *FIO(ThreadNode *t) //返回中根序列第一个节点
{
if(t==NULL)
return NULL;
ThreadNode *q=t;
while((q->GetLThread())==0)
q=q->GetLeft();
return q;
}
ThreadNode *LIO(ThreadNode *t) //返回最后一个节点
{
if(t==NULL)
return NULL;
ThreadNode *q=t;
while((q->GetRThread())==0)
q=q->GetRight();
return q;
}
ThreadNode *PIO(ThreadNode *t,ThreadNode *p) //t为根节点的二叉树搜索p中根前驱节点。
{
if(t==NULL||p==NULL)
return NULL;
ThreadNode *q;
if(p==FIO(t))
return NULL; //首节点,无前驱。
ThreadNode *lp=p->GetLeft(); //取p左指针、
if((p->GetLThread())==1)
return lp;
q=LIO(lp);
return q;
}
ThreadNode *NIO(ThreadNode *t,ThreadNode *p) // 后驱节点。
{
if(t==NULL||p==NULL)
return NULL;
ThreadNode *q;
if(p==LIO(t))
return NULL;
ThreadNode *rp=p->GetRight();
if((p->GetRThread())==1)
return rp;
q=FIO(rp);
return q;
}
void InOrderOf(ThreadNode *t) //中根遍历t的二叉树,输出
{
if(t==NULL)
return ;
ThreadNode *q;
for(q=FIO(t);q!=NULL;q=NIO(t,q))
cout<<q->GetData()<<endl;
}
void InsrtRight(ThreadNode *p,ThreadNode * s) //插入节点p,作为s右子节点。
{
if(s==NULL||p==NULL)
return ;
p->SetRight(s->GetRight());
p->SetRThread(s->GetRThread());
p->SetLeft(s);
p->SetLThread(1);
s->SetRight(p);
s->SetRThread(0);
if((s->GetRThread())==0)
{
ThreadNode * q=p->GetRight();
q=FIO(q);
q->SetLeft(p);
}
}
ThreadNode * GetRoot(){return root;}
void SetRoot(ThreadNode *t){root=t;}
int GetStop(){return stop;}
void SetStop(int tostop) {stop=tostop;}
void CreateThreadingTree(int tostop) //建立root的中序线索二叉树
{
SetStop(tostop);
root=Create();
}
ThreadNode * Create()
{
ThreadNode *t,*t1,*t2;
int item;
cout<<"请输入值:"<<endl;
cin>>item;
if(item==stop)
{
t=NULL;
return t;
}
else
{
if(!(t=new ThreadNode(item)))
return NULL;
t1=Create();
t->SetLeft(t1);
t2=Create();
t->SetRight(t2);
return t;
}
}
void ThreadingTree() ; //线索化以root为根节点的中序线索二叉树。
void InThreading(ThreadNode *t)
{
ThreadNode * x;
if(t==NULL)
return ;
InThreading(t->GetLeft());
if((t->GetLeft())==NULL)
t->SetLThread(1);
if((t->GetRight())==NULL)
t->SetRThread(1);
if(x!=NULL&&(t->GetLThread())==1)
t->SetLeft(x);
if(x!=NULL&&(x->GetRThread())==1)
x->SetRight(t);
x=t;
if((t->GetRThread())==0)
InThreading(t->GetRight());
}
ThreadNode * First(){return FIO(root);};
ThreadNode * Last(){return LIO(root);};
void InOrder () {InOrderOf(root);};
ThreadNode * search(ThreadNode *t,int item); //搜索item
void InsertLeft(ThreadNode * p,ThreadNode *s);
void DeleteRight(ThreadNode *p,ThreadNode *s);
void DeleteLeft(ThreadNode *p,ThreadNode *s);
ThreadNode *Getroot(void)
{
ThreadNode *t;
t=root;
return t;
}
};
int main(void)
{
ThreadInTree tree1;
tree1.CreateThreadingTree(1000); //创建线索二叉树
tree1.InThreading(tree1.GetRoot()); //线索化二叉树
cout<<"中序输出二叉树为:"<<endl;
tree1.InOrderOf(tree1.GetRoot());
return 0;
}
错误:
--------------------Configuration: Cpp1 - Win32 Debug--------------------
Compiling...
Cpp1.cpp
D:\C++编程练习\Cpp1.cpp(184) : error C2512: 'ThreadInTree' : no appropriate default constructor available
Error executing cl.exe.
Cpp1.obj - 1 error(s), 0 warning(s)
[ 本帖最后由 做个好人 于 2010-6-15 17:10 编辑 ]