#include "stdafx.h"
#include "stdlib.h"
int n=0;
struct student
{
    int num;
    float scores;
    struct student *next;

};
struct student * construct()//创建链表
{   
    struct student *head,*p1,*p2;
    p1=(struct student *)malloc(sizeof(struct student *));
    p2=p1;
    head=p1;
    scanf_s("%d%f",&(p1->num) ,&(p1->scores) );
    while(1)
    {
        p1=(struct student *)malloc(sizeof(struct student *));
        scanf_s("%d%f",&(p1->num) ,&(p1->scores) );
        if(p1->num ==0)
        {
            p2->next=NULL;
            break;
        }
        else
        {
            p2->next =p1;
            p2=p1;
            n=n+1;
        }
     
    }
    return head;
}
void print(struct student * stu)//输出链表
{    struct student * st;
     st=stu;
     do
     {
         printf("%d %f\n",st->num ,st->scores );
         st=st->next ;
     }while(st!=NULL);
}
int _tmain(int argc, _TCHAR* argv[])
{
        struct stuent *p;
        p=construct();//这里不能赋值错误    1    error C2440: “=”: 无法从“student *”转换为“wmain::stuent *”
        print(p);//这里的参数也不对
        return 0;
}

struct stuent *p;  标红那个打错了~~

这错误犯的......

scanf_s("%d%f",&(p1->num) ,&(p1->scores) );
int _tmain(int argc, _TCHAR* argv[])
scanf_s("%d%f",&(p1->num) ,&(p1->scores) );
scanf_s("%d%f",&(p1->num) ,&(p1->scores) );
p1=(struct student *)malloc(sizeof(struct student *));
红色部分没见过，不知道你用的是哪种编译器，最后一个申请内存的时候为什么老加上一个 * 呢，不明白，我用的vc6，把上面的改了，可以运行···楼主再看一下吧！