c程数据结构二叉树建立

Status CreatBiTree(BiTree T)
{
char ch;
scanf("%c",&ch);
if(ch ==' ') T=NULL;
else
{
if(!(T=(BiTNode *)malloc(sizeof(BiTNode))))return OVERFLOW;
T->data=ch;
CreatBiTree(T->lchild);
CreatBiTree(T->rchild);
}
printf("根节点构造成功\n");
return OK;
}

int main(){
BiTNode *T;
CreatBiTree(T);
}


错误是:C:\Documents and Settings\happy\桌面\BiTree\MyBiTree.cpp(12) : error C2668: 'CreatBiTree' : ambiguous call to overloaded function
C:\Documents and Settings\happy\桌面\BiTree\MyBiTree.cpp(13) : error C2668: 'CreatBiTree' : ambiguous call to overloaded function
C:\Documents and Settings\happy\桌面\BiTree\MyBiTree.cpp(21) : error C2668: 'CreatBiTree' : ambiguous call to overloaded function
C:\Documents and Settings\happy\桌面\BiTree\MyBiTree.cpp(22) : warning C4508: 'main' : function should return a value; 'void' return type assumed
执行 cl.exe 时出错.

希望达人给解释一下,谢谢

---

CreatBiTree函数的参数类型是BiTree；
而main函数中调用的时候传的参数类型是BiTNode *。

---

typedef struct BiTNode{
TElemType data;
struct BiTNode *lchild,*rchild;
}BiTNode, *BiTree;
这是我的二叉树定义,mian中的定义没错的,应该是结构体的问题,可是我找不出来~~