高分 求助一个用C语言编写的“学生学籍管理系统”

#include #define LEN sizeof(struct student) struct student {long num; float score[3]; float average; struct student *next; }; int n; struct student*creat()/*录入模块*/ {struct student *head,*p1,*p2; n=0;head=NULL; p1=(struct student*)m