学生管理系统-链表.docVIP

#include stdio.h #include stdlib.h #include string.h #include malloc.h void studentinformation();// //studentinformation void add();//add student information void mdelete();// delete student information void modify();//modify studnet information void Input();//student information menu void showall();//show all student information void show_ID();//according to ID show student information void show_name();//according to name seek to student information void show_chinese_score();//according to chinese seek to student information void show_total_score();//according to total score seek tl student information void show_over_number();// void show_chinese_average(); void Find();//find student information struct studentIF { char ID[15];//student ID char Sname[15];// student name char Ssex[5];//student sex struct score//student score { int china; int english; int math; }score1; struct studentIF *next; }; void SaveOne(struct studentIF st); //only save a singal student information struct studentIF * ReadAll(); //read all student information from the stuent.txt int WriteAll(struct studentIF *st1);//rewrite all student information to file int main() { printf(Please choose your set.\n1:Step the student system.0:exit\n); int n; scanf(%d,n); switch(n) { case 0: exit(0); break; case 1: studentinformation();//step into the student system break; } return 0; } void studentinformation() { printf(Please choose your next step.\n); printf(1:Input the student data.2:Find the student information.0:exit.\n); int n; scanf(%d,n); switch(n) { case 0: exit(0); break; case 1: Input(); break; case 2: Find(); break; } } void Input() { printf(Please choose your next step:\n); printf(1: add studentinformation. 2: delete student information\n); printf(3: modify student information. 4: back. 0: exit\n); int n ; scanf(%d,n); switch(n) { case 0: exit(0); bre