edit8.c

C语言编程工具 可以快捷 方便的编写程序

void pan(struct btree *tree)
{
	if(tree==NULL)printf("no tree");
	else pretrav(tree);
}

void pan1(struct btree *tree)
{
	if(!tree)printf("no tree");
	else zhong(tree);
}
void pan2(struct btree *tree)
{
	if(tree==NULL)printf("no tree");
	else hou(tree);
}
void pan3(struct btree *tree)
{
	if(!tree)printf("no tree");
	else  ShowTree(tree,200,0);
}
void pan4(struct btree *tree)
{
	if(tree==NULL)printf(" tree is empty");
	else freeall(tree);
}
 pretrav(struct btree *tree)
 {

		if(tree!=NULL){
		   printf("%c ",tree->data);
		   pretrav(tree->left);
		   pretrav(tree->right);
					}
}

zhong(struct btree *tree)
 {

		if(tree!=NULL){

		   pretrav(tree->left);
		   printf("%c ",tree->data);
		   pretrav(tree->right);
					}
}
 hou(struct btree *tree)
 {

		if(tree!=NULL){

		   pretrav(tree->left);
		   pretrav(tree->right);
		   printf("%c ",tree->data);
					}
}