C语言链表问题（简单）

#include"stdio.h"
#include"stdlib.h"
#include"string.h"
#define LEN sizeof(struct student)

struct student
{
char num[5];
float score;
struct student *next;
};
struct student *creat(void)
{
struct student *head=NULL,*net,*tail;int count=0;
for(;;)
{net=(struct student *)malloc(LEN);
printf("Input the number of student No. %d(5 bytes):",count+1);
scanf("%5s",net->num);
if(strcmp(net->num,"end")==0)
{free(net);break;}
printf("Input the score of the student %d :",count+1);
scanf("%f",&net->score);
count++;
if(count==1)
tail=head=net;
else
{
tail->next=net;
tail=net;
}
}
net->next=NULL;
return(head);

}

struct student *delist(struct student *head,char num[])
{<

简单C语言问题 c语言简单问题? c语言简单问题。。。。 C语言简单问题 C语言简单问题!! C语言简单问题~ 简单c语言问题 C语言简单问题求解（2） C语言简单问题（3） 菜鸟C语言问题（简单）