以下是一个子函数，编译时却出现了很多错误
请问是为什么？
error: expected `while' before "student"
error: expected `(' before "student"
error: expected primary-expression before '*' token
error: expected primary-expression before "void"

error: expected `)' before '{' token
error: expected `;' before '{' token
error: incompatible types in assignment of `const char[7]' to `char[20]'
error: expected primary-expression before '{' token
error: expected `;' before '{' token
error: incompatible types in assignment of `const char[7]' to `char[20]'
error: expected primary-expression before '{' token

error: expected `;' before '{' token
error: incompatible types in assignment of `const char[7]' to `char[20]'
error: expected primary-expression before '{' token
error: expected `;' before '{' token
error: incompatible types in assignment of `const char[7]' to `char[20]'
error: expected primary-expression before '{' token
error: expected `;' before '{' token
error: incompatible types in assignment of `const char[5]' to `char[20]'
error: expected primary-expression before '{' token
error: expected `;' before '{' token
error: invalid conversion from `student*' to `int'

struct student *creat(void)    /*建立动态链表，制作学生成绩单*/
{
       struct student *head;
       struct student *p1,*p2;
       p1=p2=(struct student*)malloc(LEN);/*开辟一个新单元*/
       p1->num=1,p1->name="周润发",p1->score[3]={80.00,74.50,91.00};
       head=NULL;
       for(n=1;n<6;n++)
       {
                       if(n==1)head=p1;
                       else p2->next=p1;
                       p2=p1;
                       p1=(struct student*)malloc(LEN);
                       switch(n)
                       {
                                case 2:p1->num=2,p1->name="刘德华",p1->score[3]={83.00,64.00,75.00};break;
                                case 3:p1->num=3,p1->name="张学友",p1->score[3]={90.00,69.00,81.50};break;
                                case 4:p1->num=4,p1->name="郭富城",p1->score[3]={73.00,62.00,79.00};break;
                                case 5:p1->num=5,p1->name="黎明",p1->score[3]={85.50,84.00,78.00};break;
                       }
       }
       p2->next=NULL;
       return(head);
}