求助；c链表里的一个例子 帮看看哪里错了
程序代码：
# include<stdio.h>
# include<stdlib.h>
# include<malloc.h>
/* # define NULL 0*/
# define LEN sizeof(struct student)
struct student
{
long num;
float score;
struct student * next;
};
int n;
struct student * creat(void)
{
struct student * head, * p1, * p2;
p1 = p2 = (struct student *)malloc(LEN);
p1 = head;
n = 0;
printf("please inputs the recodes:\n");
scanf("%ld,%f",p1->num, p1->score);
while(p1->num != 0)
{
n = n+1;
if(n==1)
{
head = p1;
}
else
{
p2->next = p1;
p2 = p1;
p1 = (struct student *)malloc(LEN);
scanf("%ld,%f",p1->num, p1->score);
}
p2->next = NULL;
return(head);
}
void print(struct student * head)
{
struct student * p;
printf("\nThese %d records are:\n",n);
p = head;
if(head == NULL)
printf("There is no record.\n");
else
{
while(p != NULL)
{
printf("%ld %5.1f\n",p->num, p->score);
p = p->next;
}
}
/*return(0);*/
}
?
int main()
{
struct student * creat(void);
void print(struct student * head);
struct student * head;
head = creat();
print(head);
return(0);
}
--------------------Configuration: SingleLinkedList - Win32 Debug--------------------
Compiling...
SingleLinkedList.c
E:\code\Ctest\SingleLinkedList.c(42) : error C2143: syntax error : missing ';' before 'type'
E:\code\Ctest\SingleLinkedList.c(46) : error C2065: 'p' : undeclared identifier
E:\code\Ctest\SingleLinkedList.c(46) : warning C4047: '=' : 'int ' differs in levels of indirection from 'struct student *'
E:\code\Ctest\SingleLinkedList.c(51) : warning C4047: '!=' : 'int ' differs in levels of indirection from 'void *'
E:\code\Ctest\SingleLinkedList.c(53) : error C2223: left of '->num' must point to struct/union
E:\code\Ctest\SingleLinkedList.c(53) : error C2223: left of '->score' must point to struct/union
E:\code\Ctest\SingleLinkedList.c(54) : error C2223: left of '->next' must point to struct/union
执行 cl.exe 时出错.
SingleLinkedList.obj - 1 error(s), 0 warning(s)
程序第46行就是定义print函数里面的p=head;这一语句，提示貌似是说p没用定义，但是前面第44行struct student * p;已经定义了啊 不知道什么原因呢？求解答 C 链表 struct p
[解决办法]
creat里的while循环少了右大括号
[解决办法]
struct student * creat(void)
{}
缺少右大括号
