#include <iostream>
using namespace std;
#define NULL 0
#define LEN sizeof(struct student)//计算结构体的大小
struct student//学生连表结构体
{
long num;
float score;
struct student *next;
};
int n;
struct student *creat(void)//构造链表
{
struct student *head;//定义一个头节点
struct student *p1,*p2;//定义两个结点指针
n=0;
p1=p2=(struct student *)malloc(LEN);//动态分配节点
cin>>p1->num>>p1->score;
//scanf(“%ld,%f”,&p1->num,&p1->score);
head=NULL;
while(p1->num != 0)
{
n=n+1;
if(n == 1)
head = p1;
else
p2->next = p1;
p2 = p1;
p1 = (struct student *)malloc(LEN);
cin>>p1->num>>p1->score;
//scanf(“%ld,%f”,&p1->num,&p1->score);
}
p2->next = NULL;
return(head);
}
struct student *insert_head()
{
struct student *p;
struct student *head=creat();
struct student *next;
cout<<head<<“====”<<endl;
p=(struct student*)malloc(LEN);
cout<<“输入你要插入的数字”<<endl;
cin>>p->num>>p->score;
p->next=head;
head=p;
while(head->next!=NULL){
cout<<head->num<<” “<<head->score<<endl;
head=head->next;
}
return (head);
}
int main()
{
insert_head();
//creat();
cout<<LEN<<endl;
return 0;
}