struct student
{
    long No;
    int  Noclass;
    char name[10];
    int class1,class2,class3,class4,class5;
    double avg;

}std[180];
struct student1
{
    long No;
    int NoClass;
    char name[10];
    double avg;
    struct student1 *next;
}std1[180];



int newlink()
{
    int i,j,temp;
    for(i=0;i<180;i++)
    {
        std1[i].No=std[i].No;
        for(j=0;j<6;j++)
        {
            std1[i].name[j] =std[i].name[j];
        }
        std1[i].NoClass =std[i].Noclass;
        std1[i].avg=std[i].avg;
        std1[i].next=&std1[i+1].No;
    }   
    for(i=0;i<180;i++)
    {
        for(j=i+1;j<181;j++)
        {
            if(std1[i].avg < std1[j].avg)
                {
                    temp=std1[i].avg;
                    std1[i].avg=std1[j].avg ;
                    std1[j].avg =temp;
                }
        }
    }
    return 1;
}


标记那行总是error C2440: '=' : cannot convert from 'long *' to 'struct student1 *'
怎么办！！！