#include<stdio.h>
#include<stdlib.h>
struct student
{
    int Xuehao;
    int Score;
    struct student *next;
};
typedef struct student Student;
Student *Create(void)
{
    Student *head=NULL;
    student *p1,*p2;
    int n=0;
    p1=p2=(Student *)malloc(sizeof(Student));
    if(p1!=NULL)
    {
        n++;
        printf("请输入第%d位同学的学号：\n",n);
        scanf("%d",&(p1->Xuehao));
        if(p1->Xuehao!=0)
        {
            printf("请输入第%d位同学的分数：\n",n);
            scanf("%f",&(p1->Score));
            head=p1;
        }
        else
        {
            free(p1);
            return head;
        }
    }
    else
        return head;
    while(1)
    {
        p1=(Student *)malloc(sizeof(Student));
        if(p1!=NULL)
        {
            n++;
            printf("请输入第%d位同学的学号：\n",n);
            scanf("%f",&(p1->Xuehao));
            if(p1->Xuehao!=0)
            {
                printf("请输入第%d位同学的分数：\n",n);
                scanf("%f",&(p1->Score));
                p2->next=p1;
                p2=p1;
            }
            else
            {
                free(p1);
                return p1->next=NULL;
                return head;
            }
        }
    }
}
void Print(Student *head)
{
    Student *p=head;
    printf("\n请输出数据：\n");
    if(head!=NULL)
        do
        {
            printf("%d\t%f\n",p->Xuehao,p->Score);
            p=p->next;
        }while(p!=NULL);
        else
            printf("此链表为空\n");
}
int main()
{
    typedef struct student Student;
    Student *Create(void);
    void Print(Student *);
    Student *head=NULL;
    int k=0;
    while(1)
    {
        printf("1——创建链表\n");
        printf("2——输出链表\n");
        printf("0——退出\n");
        printf("请选择：");
        scanf("%d\n",&k);
        switch(k)
        {
            case 1: head=Create();continue;
            case 2: Print(head);continue;
            case 0: exit(0);
        }
    }
    return 0;
}