#include <stdio.h>
typedef struct tree
{
int data;
struct tree * left;
struct tree * right;
}Tree;
void pre_order(Tree * root)//接口函数
{
if(root == NULL)
return;
else
{
printf("%d",root->data);
pre_order(root->left);//递归调用
pre_order(root->right);
}
}
int main(void)
{
return 0;
}
做到这里不会了,还请高手指教,谢谢!