#include<iostream>
using namespace std;
class book
{
public:
	int num;
	float price;
	book *next;
};
book *head=NULL;
book *creat()
{
	book *p1,*p2;
	p1=new book;
	head=p1;
	p2=p1;
	cout<<"请输入图书的编号，以0结束"<<endl;
	cin>>p1->num;
	if(p1->num!=0)
	{
		cout<<"请输入图书的价格"<<endl;
		cin>>p1->price;
	}
	else 
	{
		delete p1;p2=NULL;p2->next=NULL;head=NULL;return head;
	}
	while(p1->num!=0)
	{
		p2=p1;
		p1=new book;
		cout<<"请输入图书的编号，以0结束"<<endl;
		cin>>p1->num;
		if(p1->num!=0)
		{
			cout<<"请输入图书的价格"<<endl;
			cin>>p1->price;
		}
		p2->next=p1;
	}
	delete p1;
	p2->next=NULL;
	return head;
}
int main()
{
	creat();
	return 0;
}

【c++程序】动态链表的建立