叶节点与中间节点.h

一个显示二叉树结构和相关算法的小程序,重在结构

#ifndef LEAFNINTL_H
#define LEAFNINTL_H

class VarBinNode{
public:
	virtual bool isLeaf()=0;
};

class LeafNode:public VarBinNode{
private:
	int var;
public:
	LeafNode(const int& val)
	{var=val;}
	bool isLeaf(){return true;}
	int value(){return var;}
};

class IntlNode:public VarBinNode{
private:
	VarBinNode* left;
	VarBinNode* right;
	char opx;
public:
	IntlNode(const char& op,VarBinNode* l,VarBinNode* r)
	{  opx=op;   left=l;   right=r;   }
	bool isLeaf(){return false;}
	VarBinNode* leftchild(){return left;}
	VarBinNode* rightchild(){return right;}
	char value(){return opx;}
};

void traverse(VarBinNode *subroot){
	if(subroot==NULL)return;
	if(subroot->isLeaf())
		cout<<"Leaf: "<<((LeafNode*)subroot)->value()<<endl;
	else{
		cout<<"Internal: "<<((IntlNode*)subroot)->value()<<endl;
		traverse(((IntlNode*)subroot)->leftchild());
		traverse(((IntlNode*)subroot)->rightchild());
	}
};
#endif