#include
     
      #include
      
       #define ElemType inttypedef struct BiTNode{    ElemType data;    struct BiTNode *lchild, *rchild;}BiTNode,*BiTree;int CreateBiTree(BiTree* t){    char ch;    scanf("%c",&ch);    if(ch==' ')        (*t)=NULL;    else    {        (*t) = (BiTNode*)malloc(sizeof(BiTNode));        if(!(*t))            return 0;        (*t)->data = ch;        CreateBiTree(&(*t)->lchild);        CreateBiTree(&(*t)->rchild);    }    return 1;}void preOrderDisplay(const BiTree* t){    if((*t)==NULL)        return;    printf("%c",(*t)->data);    preOrderDisplay(&(*t)->lchild);    preOrderDisplay(&(*t)->rchild);}void inOrderDisplay(const BiTree* t){    if((*t)==NULL)        return;    inOrderDisplay(&(*t)->lchild);    printf("%c",(*t)->data);    inOrderDisplay(&(*t)->rchild);}void afterOrderDisplay(const BiTree* t){    if((*t)==NULL)        return;    afterOrderDisplay(&(*t)->lchild);    afterOrderDisplay(&(*t)->rchild);    printf("%c",(*t)->data);}int main(){    BiTree t;    int iRes = CreateBiTree(&t);    printf("******the returned result : %d\n",iRes);    printf("\n*********preOrderDisplay*********\n");    preOrderDisplay(&t);    printf("\n*********inOrderDisplay**********\n");    inOrderDisplay(&t);    printf("\n*********afterOrderDisplay*******\n");    afterOrderDisplay(&t);    return 1;}