1、頭文件Stud_mgr_system.h內容如下：#ifndef STUD_MGR_SYSTEM_H#define STUD_MGR_SYSTEM_H#include<stdio.h>#include<stdlib.h>#include<string.h>#include<malloc.h>struct stud_mgr_sysint num;char name8;char phone12;char addr12;struct stud_mgr_sys *front;struct stud_mgr_sys *back;typedef struct

2、 stud_mgr_sys student;typedef student *DoubleLink;void printlist(DoubleLink L);DoubleLink addnode(DoubleLink L);DoubleLink deletenode(DoubleLink L);DoubleLink findinfo(DoubleLink L, int num);DoubleLink modifyinfo(DoubleLink L);DoubleLink creatdoublelink();void menu();void secrecy();DoubleLink read_f

3、ile(DoubleLink L);void save_file(DoubleLink L);#endif源文件opt_sys_api.c內容如下：#include"stud_mgr_system.h"void print_err(char *p)perror("p");exit(1); void printlist(DoubleLink L) DoubleLink tmp; tmp = L;printf("n*n");while(tmp != NULL)printf("tThe student number: %dn&qu

4、ot;, tmp->num);printf("tThe student name: %sn", tmp->name);printf("tThe student phone: %sn", tmp->phone);printf("tThe student addr: %sn", tmp->addr);printf("n");tmp=tmp->front;printf("n*n");getchar(); DoubleLink creatdoublelink()Double

5、Link head;DoubleLink new_node, before;int count, i;head = (DoubleLink)malloc(sizeof(student);if(!head)print_err("Fail to malloc head");head->front = NULL;before = head->front;printf("Input number you want to create =>");scanf("%d", &count);for(i = 1; i <

6、= count; i+)new_node = (DoubleLink)malloc(sizeof(student);if(!new_node)print_err("Fail to malloc new_node");printf(" %d, The Number =>", i);scanf("%d", &new_node->num);printf("%d, The Name =>", i);scanf("%s", new_node->name);printf(&q

7、uot;%d, The Phone =>", i);scanf("%s", new_node->phone);printf("%d, The Addr =>", i);scanf("%s", new_node->addr);printf("n");new_node->front = NULL;if(head->front = NULL)head->front = new_node;before = head->front;before->back =

8、head;elsebefore->front = new_node;new_node->back = before;before = new_node;printf("Success to createnn");getchar();system("clear");return head->front;DoubleLink addnode(DoubleLink L)DoubleLink addnew, end;end = L;addnew = (DoubleLink)malloc(sizeof(student);if(!addnew)pr

9、int_err("Fail to malloc addnew");printf("Insert num =>");scanf("%d", &addnew->num);printf("Insert name =>");scanf("%s", addnew->name);printf("Insert phone =>");scanf("%s", addnew->phone);printf("Insert a

10、ddr =>");scanf("%s", addnew->addr);addnew->front = NULL;if(L = NULL)L = addnew;elsewhile(end->front != NULL)end = end->front;end->front = addnew;addnew->back = end;printf("nnInsert OKnn");return L;DoubleLink deletenode(DoubleLink L)DoubleLink ptr, tail;t

11、ail = L;while(tail->front != NULL)tail = tail->front;int delnum;printf("Please input student number you want delete =>");scanf("%d", &delnum);if(findinfo(L, delnum) = NULL)printf("nNo Information n");exit(1);printf("n=The information you delete=nn"

12、;);ptr = findinfo(L, delnum);printf("n=nn");printf("ttDelete Oknn");getchar();if(ptr = L)return L->front;else if(tail = ptr)tail->back->front = NULL;elseptr->back->front = ptr->front;ptr->front->back = ptr->back;return L;DoubleLink findinfo(DoubleLink L

13、, int findnum)int i = 1;DoubleLink ptr;ptr = L;if(L = NULL)printf("No informationn");exit(1);while(ptr != NULL)if(ptr->num = findnum)printf("nAt: %d nn", i);printf("n=nn");printf("tThe student number: %dn", ptr->num);printf("tThe student name: %sn&q

14、uot;, ptr->name);printf("tThe student phone: %sn", ptr->phone);printf("tThe student addr: %sn", ptr->addr);printf("nn=nn");getchar();return ptr;elseptr = ptr->front;i+;return ptr;DoubleLink modifyinfo(DoubleLink L)DoubleLink modptr;int modnum;printf("Pl

15、ease input student number you want modify =>");scanf("%d", &modnum);modptr = findinfo(L, modnum);if(modptr = NULL)printf("nnCan not find informationnn");else printf("Input New Number =>"); scanf("%d", &modptr->num); printf("Input New

16、 Name =>"); scanf("%s", modptr->name); printf("Input New Phone =>"); scanf("%s", modptr->phone); printf("Input New Addr =>"); scanf("%s", modptr->addr);printf("nnSuccess to Modifynn");return L;void menu()printf("

17、nn");printf("t=Student INFO System=nn");printf("t* MENU *n");printf("t* * *n");printf("t* 1.Create * 2.Display *n");printf("t* 3.search * 4.Add *n");printf("t* 5.Delete * 6.Modify *n");printf("t* 7.Exit * *n");printf("t*

18、 * *n");printf("t*n");void secrecy()char initsec10 = "123456"char inputsec10;int i, j = 0;printf("nInput:");for(i = 3; i >= 1; -i)scanf("%s", &inputsec);if(strcmp(initsec, inputsec) != 0)printf("nnYou have only %d timesn", i - 1);+j;getch

19、ar();system("clear");elsebreak;if(j = 3)printf("n");getchar();exit(1);system("clear");getchar();Main函數的內容如下:#include"stud_mgr_system.h"int main(void)char opt;DoubleLink head = NULL;DoubleLink findnode = NULL;int findnum;secrecy();while(1)menu();printf("n&

20、quot;);printf("tEnter Your Choice: bb");scanf("%c", &opt);if(opt = 'n' | opt = '0')printf("ttt");printf("nnnCan not enter space keynn");else if(opt > '8' | opt < '1')printf("nnnInput errorn ");getchar();syste

21、m("clear");switch(opt)case '1':head = creatdoublelink();break;case '2':system("clear");printlist(head);getchar();system("clear");break;case '3':system("clear");printf("Please input number you want find =>");scanf("%d", &findnum);findnode = findinfo(head, findnum);if(!findnode)printf("nn