• 点击跳转=>《导航贴》- Unity手册，系统实战学习
• 点击跳转=>《导航贴》- Android手册，重温移动开发

👉关于作者

众所周知，人生是一个漫长的流程，不断克服困难，不断反思前进的过程。在这个过程中会产生很多对于人生的质疑和思考，于是我决定将自己的思考，经验和故事全部分享出来，以此寻找共鸣 ！！！
专注于Android/Unity和各种游戏开发技巧，以及各种资源分享（网站、工具、素材、源码、游戏等）
有什么需要欢迎私我，交流群让学习不再孤单。

👉实践过程

😜问题

1.创建信息链表并以磁盘文件保存；
2.读取磁盘文件并显示输出所有学生的籍贯信息；
3.按学号或姓名查询其籍贯；
4.按籍贯查询并输出该籍贯的所有学生；
5.能添加、删除和修改学生的籍贯信息

😜回答

#include "dos.h"
#include "stdio.h"
#include "stdlib.h"
#include "conio.h"
#include "math.h"
#include "string.h"
/**********************建立链表******************************/
struct hj
{long number;char name[10], address[50];struct hj *next;
};/********************文件操作函数******************************/
FILE* fp;
void openfile(char xx
[20])
{fp = fopen(xx, "ab+");if (fp == NULL)fp = fopen(xx, "wb");
}/**************录入信息函数***********************************/
void hjnew(void)
{system("cls");int n = 0;long xnumber;char xname[10];char xaddress[50];struct hj* head;struct hj* x1, *x2;head = NULL;x2 = NULL;printf("\n                ★★★★★欢迎使用户籍管理系统★★★★★\n");printf("\n                          ★★★录入信息★★★\n");printf("\n                        〓提示输入0返回上级菜单〓\n\n\n");printf("\n                         请输入学号【15字内】：");scanf("%ld", &xnumber);if (xnumber == 0)goto haha;printf("\n                         请输入姓名【10字内】：");scanf("%s", xname);printf("\n                         请输入籍贯【25字内】：");scanf("%s", xaddress);while (xnumber != 0){n++;x1 = (struct hj *)malloc(sizeof(struct hj));x1->number = xnumber;strcpy(x1->name, xname);strcpy(x1->address, xaddress);if (n == 1)head = x1;elsex2->next = x1;x2 = x1;printf("\n                         请输入学号【15字内】：");scanf("%ld", &xnumber);if (xnumber == 0)break;printf("\n                         请输入姓名【10字内】：");scanf("%s", xname);printf("\n                         请输入籍贯【25字内】：");scanf("%s", xaddress);}x2->next = NULL;x1 = head;while (x1 != NULL){openfile("hj.txt");char d[5] = "山西";fwrite(x1, sizeof(struct hj),1,fp);fclose(fp);if (strstr(x1->address, d) != NULL){openfile("schj.txt");fwrite(x1, sizeof(struct hj),1,fp);fclose(fp);}else{openfile("qthj.txt");fwrite(x1, sizeof(struct hj),1,fp);fclose(fp);}x1 = x1->next;}haha: ;
}/*****************************查询函数*************************/
void hjxmselect(void) //按学号方式查询函数
{ssmmx:int n = 0;long hh;system("cls");printf("\n                ★★★★★欢迎使用户籍管理系统★★★★★\n");printf("\n                        ★★★查询编辑信息★★★\n");printf("\n                        〓提示输入0返回上级菜单〓\n\n\n");printf("                         请您输入学号：");scanf("%ld", &hh);if (hh != 0){struct hj* p;struct hj* q = NULL, *head = NULL;fp = fopen("hj.txt", "rb");if (fp == NULL){printf("\n没有记录，请输入记录然后再查询!");getch();goto jjx;}while (!feof(fp)){n++;p = (struct hj *)malloc(sizeof(struct hj));fread(p, sizeof(struct hj),1,fp);if (n == 1)head = p;elseq->next = p;q = p;}q->next = NULL;p = head;while (p != NULL){if (p->number == hh){int a;printf("\n  结 果 →     学号=%ld   姓名=%s", p->number, p->name);printf("\n               地址=%s", p->address);printf("\n\n  操 作 →    ⑴更改数据  ⑵删除数据  ⑶查询其他数据  ⑷返回上页  ⑸退出程序\n\n  请您选择操作:");ssmx:scanf("%d", &a);switch (a){void hjedit(struct hj* headd, struct hj* pp);void hjdelete(struct hj* headdd, struct hj* ss);case 1:hjedit(head, p);goto ssmmx;break;case 2:hjdelete(head, p);goto ssmmx;break;case 3: goto ssmmx;case 4: goto jjx;case 5: exit(0);default:printf("\n                        错误的选择，请重新选择：");goto ssmx;}}elsep = p->next;}int iiii = 0;printf("\n                         没有此记录 1.重新查询 2.返回上一页 3.退出程序!");printf("\n                         请选择:");qqqq:scanf("%d", &iiii);switch (iiii){case 1: goto ssmmx;case 2: goto jjx;case 3: exit(0);default:printf("\n                        错误的选择，请重新选择：");goto qqqq;}goto jjx;}jjx: ;
}void hjxhselect(void) //按姓名方式查询函数
{ssmm:int n = 0;char hh[10];system("cls");printf("\n                ★★★★★欢迎使用户籍管理系统★★★★★\n");printf("\n                        ★★★查询编辑信息★★★\n");printf("\n                        〓提示输入0返回上级菜单〓\n\n\n");printf("                         请您输入姓名：");scanf("%s", hh);if (strcmp(hh, "0") != 0){struct hj* p;struct hj* q = NULL, *head = NULL;fp = fopen("hj.txt", "rb");if (fp == NULL){printf("\n没有记录，请输入记录然后再查询!");getch();goto jjj;}while (!feof(fp)){n++;p = (struct hj *)malloc(sizeof(struct hj));fread(p, sizeof(struct hj),1,fp);if (n == 1)head = p;elseq->next = p;q = p;}q->next = NULL;p = head;while (p != NULL){if (strcmp(p->name, hh) == 0){int a;printf("\n  结 果 →     学号=%ld   姓名=%s  ", p->number, p->name);printf("\n               地址=%s", p->address);printf("\n\n  操 作 →    ⑴更改数据  ⑵删除数据  ⑶查询其他数据  ⑷返回上页  ⑸退出程序\n\n  请您选择操作:");ssm:scanf("%d", &a);switch (a){void hjedit(struct hj* headd, struct hj* pp);void hjdelete(struct hj* headdd, struct hj* ss);case 1:hjedit(head, p);goto ssmm;break;case 2:hjdelete(head, p);goto ssmm;break;case 3: goto ssmm;case 4: goto jjj;case 5: exit(0);default:printf("\n                        错误的选择，请重新选择：");goto ssm;}}elsep = p->next;}int iii = 0;printf("\n                         没有此记录 1.重新查询 2.返回上一页 3.退出程序!");printf("\n                         请选择:");qqq:scanf("%d", &iii);switch (iii){case 1: goto ssmm;case 2: goto jjj;case 3: exit(0);default:printf("\n                        错误的选择，请重新选择：");goto qqq;}goto jjj;}jjj: ;
}void hjjgselect(void) //按籍贯方式查询
{yyy:int i;system("cls");printf("\n                ★★★★★欢迎使用户籍管理系统★★★★★\n");printf("\n                      ★★★籍贯方式查询信息★★★\n\n\n");printf("\n                         一  显示所有信息\n");printf("\n                         二  显示山西籍所有信息\n");printf("\n                         三  显示其它籍所有信息\n");printf("\n                         四  自定义查询信息\n");printf("\n                         五  ←返回上级菜单\n");printf("\n                         六  ↓退出程序\n");printf("\n\n                          请选择：");scanf("%d", &i);switch (i){void zdyselect(void);void allselect(char a[8]);case 1:allselect("hj.txt");goto yyy;break;case 2:allselect("schj.txt");goto yyy;break;case 3:allselect("qthj.txt");goto yyy;break;case 4: zdyselect();case 5: break;case 6: exit(0);}
}void zdyselect(void)
{ssmmz:int n = 0, j = 0;char hh[10];system("cls");printf("\n                ★★★★★欢迎使用户籍管理系统★★★★★\n");printf("\n                        ★★★自定义查询信息★★★\n\n\n");printf("                         请您输入地址关键字：");scanf("%s", hh);if (strcmp(hh, "0") != 0){struct hj* p;struct hj* q = NULL, *head = NULL;fp = fopen("hj.txt", "rb");if (fp == NULL){printf("\n       没有记录，请输入记录然后再查询!");getch();goto jjz;}while (!feof(fp)){n++;p = (struct hj *)malloc(sizeof(struct hj));fread(p, sizeof(struct hj),1,fp);if (n == 1)head = p;elseq->next = p;q = p;}q->next = NULL;p = head;while (p != NULL){if (strstr(p->address, hh) != NULL){int a;j++;printf("\n  结 果 →     学号=%ld   姓名=%s  ", p->number, p->name);printf("\n               地址=%s", p->address);printf("\n\n  操 作 →    ⑴更改数据  ⑵删除数据  ⑶查询下一条数据  ⑷返回上页  ⑸退出程序\n\n  请您选择操作:");ssmz:scanf("%d", &a);switch (a){void hjedit(struct hj* headd, struct hj* pp);void hjdelete(struct hj* headdd, struct hj* ss);case 1:hjedit(head, p);goto ssmmz;break;case 2:hjdelete(head, p);goto ssmmz;break;case 3:p = p->next;continue;case 4: goto jjz;case 5: exit(0);default:printf("\n                        错误的选择，请重新选择：");goto ssmz;}p = p->next;}elsep = p->next;}if (j == 0){printf("\n\n\n没有匹配的记录 按任意键继续!");getch();fclose(fp);goto ssmmz;}else{int xx;printf("\n\n查询完毕!    ⑴  继续查询  ⑵  返回上一级菜单  ⑶   退出程序");printf("\n请选择：");scanf("%d", &xx);if (xx == 2)goto jjz;else if (xx == 3)exit(0);}goto ssmmz;jjz: ;}
}void allselect(char a
[8]) //全部查询
{int n = 0;int k = 0;system("cls");printf("\n                ★★★★★欢迎使用户籍管理系统★★★★★\n");printf("\n                        ★★★籍贯方式信息★★★\n\n\n");struct hj* p;struct hj* q = NULL, *head = NULL;fp = fopen(a, "rb");if (fp == NULL){printf("\n对不起，没有记录无法查询!");goto xxxx;}rewind(fp);while (!feof(fp)){n++;p = (struct hj *)malloc(sizeof(struct hj));fread(p, sizeof(struct hj),1,fp);if (n == 1)head = p;elseq->next = p;q = p;}q->next = NULL;struct hj* h1, *p2,*q3,*r4,*s5;h1 = p2 = (hj*) malloc(sizeof(struct hj));p2->next = head;while (p2->next != NULL){q3 = p2->next;r4 = p2;while (q3->next != NULL){if (q3->next->number < p2->next->number)r4 = q3;q3 = q3->next;}if (r4 != p2){s5 = r4->next;r4->next = s5->next;s5->next = p2->next;p2->next = s5;}p2 = p2->next;}head = h1->next->next;free(h1);p = head;while (p != NULL && n > 0){n--;printf("\n学号=%ld  姓名=%s", p->number, p->name);printf("\n地址=%s", p->address);p = p->next;}xxxx:printf("\n→显示完毕←\n⑴ ↑返回上级菜单   ⑵ ↓退出程序 \n请 选 择 ：");xxx:scanf("%d", &n);switch (n){case 1: break;case 2: exit(0);default:printf("\n错误的选择，请重新选择：");goto xxx;}
}void hjselect(void) //查询编辑信息函数
{cxbegin:int a;system("cls");printf("\n                ★★★★★欢迎使用户籍管理系统★★★★★\n");printf("\n                        ★★★查询编辑信息★★★\n\n\n");printf("\n                         一    按学号方式查询\n");printf("\n                         二    按姓名方式查询\n");printf("\n                         三    按籍贯方式查询\n");printf("\n                         四    →显示全部信息\n");printf("\n                         五    ←返回上级菜单\n");printf("\n                         请 选 择 查 询 方 式：");cxmm:scanf("%d", &a);switch (a){case 1:hjxmselect();goto cxbegin;break;case 2:hjxhselect();goto cxbegin;break;case 3:hjjgselect();goto cxbegin;break;case 4:allselect("hj.txt");goto cxbegin;break;case 5: break;default:printf("\n错误的选择，请重新选择：");goto cxmm;}
}void hjde(void) //删除界面函数
{cxxbegin:int a;system("cls");printf("\n                ★★★★★欢迎使用户籍管理系统★★★★★\n");printf("\n                          ★★★删除信息★★★\n\n\n");printf("\n                         一    按学号方式删除\n");printf("\n                         二    按姓名方式删除\n");printf("\n                         三    按籍贯方式删除\n");printf("\n                         四    →删除全部信息\n");printf("\n                         五    ←返回上级菜单\n");printf("\n                         请 选 择 删 除 方 式：");cxxmm:scanf("%d", &a);int i = 0;switch (a){case 1:hjxmselect();goto cxxbegin;break;case 2:hjxhselect();goto cxxbegin;break;case 3:zdyselect();goto cxxbegin;break;case 4:fp = fopen("hj.txt", "wb");if (fp != NULL)i++;fp = fopen("schj.txt", "wb");if (fp != NULL)i++;fp = fopen("qthj.txt", "wb");if (fp != NULL)i++;if (i == 3){printf("\n                         全部数据已经删除!!!!!!敲任意键继续");getch();}goto cxxbegin;break;case 5: break;default:printf("\n错误的选择，请重新选择：");goto cxxmm;}
}//==============删除函数接口===============
void hjdelete(struct hj*headdd,struct hj*ss)
{
struct hj *q;char d[5]= "山西";if(headdd==ss)
{headdd = headdd->next;goto gogo;
}
q=headdd;
while(q!=NULL)
{if (q->next->number == ss->number){break;}q = q->next;
}
q->next=ss->next;
gogo:
q=headdd;
fp=fopen("hj.txt", "wb");while(q!=NULL)
{fwrite(q, sizeof(struct hj),1,fp);q = q->next;
}
fclose(fp);
q=headdd;
fp=fopen("schj.txt", "wb");while(q!=NULL)
{if (strstr(q->address, d) != NULL){fwrite(q, sizeof(struct hj),1,fp);}q = q->next;
}
fclose(fp);
q=headdd;
fp=fopen("qthj.txt", "wb");while(q!=NULL)
{if (strstr(q->address, d) == NULL){fwrite(q, sizeof(struct hj),1,fp);}q = q->next;
}
fclose(fp);
}
//===============编辑函数接口==============
void hjedit(struct hj*headd,struct hj*pp)
{int n = 0;struct hj* p, *p1,*p2;char d[5] = "江苏";printf("\n  输 入 →    学号=");scanf("%ld", &pp->number);printf("\n              姓名=");scanf("%s", pp->name);printf("\n              地址=");scanf("%s", pp->address);p = headd;fp = fopen("hj.txt", "wb");while (p != NULL){fwrite(p, sizeof(struct hj),1,fp);p = p->next;}fclose(fp);p1 = headd;fp = fopen("schj.txt", "wb");while (p1 != NULL){if (strstr(p1->address, d) != NULL){fwrite(p1, sizeof(struct hj),1,fp);}p1 = p1->next;}fclose(fp);p2 = headd;fp = fopen("qthj.txt", "wb");while (p2 != NULL){if (strstr(p2->address, d) == NULL){fwrite(p2, sizeof(struct hj),1,fp);}p2 = p2->next;}fclose(fp);
}/**************************主函数***********************/
int main(int argc, char* argv[])
{begin:int t;system("cls");printf("\n                ★★★★★欢迎使用户籍管理系统★★★★★\n\n\n\n\n");printf("                        一 录入学生籍贯信息\n\n");printf("                        二 查编学生籍贯信息\n\n");printf("                        三 删除学生籍贯信息\n\n");printf("                        四 退出程序\n\n");printf("                        请您选择：");mm:scanf("%d", &t);switch (t){case 1:hjnew();break;case 2:hjselect();break;case 3:hjde();break;case 4: exit(0);default:printf("\n                        错误的选择，请重新选择：");goto mm;}goto begin;return 0;
}

👉其他

📢作者：小空和小芝中的小空
📢转载说明-务必注明来源：https://zhima.blog.csdn.net/
📢这位道友请留步☁️，我观你气度不凡，谈吐间隐隐有王者霸气💚，日后定有一番大作为📝！！！旁边有点赞👍收藏🌟今日传你，点了吧，未来你成功☀️，我分文不取，若不成功⚡️，也好回来找我。

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