3建树和遍历
typedef struct node{ int data; struct node *lchild,*rchild; }*treetp,tree; treetp create (treetp t,int c); void print1(treetp); void print2(treetp); void print3(treetp); int number=0;
typedef struct node{ int data; struct node *lchild,*rchild; }*treetp,tree; treetp create (treetp t,int c); void print1(treetp); void print2(treetp); void print3(treetp); int number=0;