第一、树的构建
定义树结构
struct BTNode {
char data;
struct BTNode* pLChild;
struct BTNode* pRChild;
};
静态方式创建一个简单的二叉树
struct BTNode* create_list() {
struct BTNode* pA = (struct BTNode*)malloc(sizeof(BTNode));
struct BTNode* pB = (struct BTNode*)malloc(sizeof(BTNode));
struct BTNode* pC = (struc
