课程设计

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<malloc.h>
#define NULL 0

struct student
{
 char name[10];
 int ID; 
 int age;
 int tel; 
 struct student *next;
};
struct student *build(struct student *head,int n);
struct student *show(struct student *head,int n);
struct student *search(struct student *head,int n);
struct student *del(struct student *head,int n);
struct student *save(struct student *head,int n);
struct student *add(struct student *head,int n);
struct student *see(struct student *head,int n);
struct student *jiemian(struct student *head,int n);
//struct student *Exit(struct student *head,int n);
void Exit();
//struct student *paixu(struct student *head,int n);