C 杂志订阅管理系统

支持管理员和普通用户两种角色登录

支持用户注册和密码修改

支持杂志增删改查和统计

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <conio.h>
#include <time.h>///结构类型定义区
typedef struct _Magzine
{char magid[20];        //杂志刊号，关键字，创建后不允许修改char magname[30];  //杂志名称char magunit[30]; //杂志单位float price;      //单价_Magzine() //默认构造函数进行初始化{memset(magid, 0, 20);memset(magname, 0, 30);memset(magunit, 0, 30);price = 0;}
}Magzine;typedef struct _Customer
{char account[20];//客户编号，也是账号，关键字，创建后不允许修改char name[20];   //姓名char sex[3];    //性别char tel[12];   //电话char unit[20];  //单位char pwd[20];   //客户密码_Customer() //默认构造函数进行初始化{memset(name,0,20);memset(sex,0,3);memset(tel,0,12);memset(account,0,20);memset(unit,0,20);memset(pwd,0,20);}
}Customer;typedef struct _CMR  //客户订阅杂志关系结构
{char account[20];  //客户编号char magid[20];       //杂志刊号int subsnum;      //订阅数量char duetime[9];  //订阅期限，格式20210615（年月日）_CMR() //默认构造函数进行初始化{memset(account, 0, 20);memset(magid, 0, 20);memset(duetime, 0, 9);subsnum = 0;}
}CMR;//全局变量区
bool bmanagerlogin = false;  //全局变量，当前登录账户类型 true--管理员；false--普通用户
char useraccount[20] = {0}; //当前登录的普通用户账号，前提是bmanagerlogin为false
Customer customer[50]; //用户信息  --用户设定最多50个
int nCustomer = 0; //当前用户数量
Magzine magzine[20]; //杂志信息    -- 杂志设定最大20种
int nMagzine = 0;  //当前杂志数量
CMR cmr[1000];  //客户订阅杂志信息
int ncmr = 0;  //客户订阅杂志总数量//函数区
//读取客户信息
void readcustomerinfo(FILE *fp)
{char buf[200] = {0};nCustomer = 0;if(fgets(buf,200,fp) != NULL){nCustomer = atoi(buf);}for(int i=0;i<nCustomer;i++){if(fgets(buf, sizeof(buf), fp) != NULL){sscanf(buf,"%s\t%s\t%s\t%s\t%s\t%s",customer[i].account,customer[i].name,customer[i].sex,customer[i].tel,customer[i].unit,customer[i].pwd);}else{nCustomer = i;break;}}
}//读取杂志信息
void readmagzineinfo(FILE *fp)
{char buf[200] = {0};nMagzine = 0;if(fgets(buf,200,fp) != NULL){nMagzine = atoi(buf);}for(int i=0;i<nMagzine;i++){if(fgets(buf, sizeof(buf), fp) != NULL){sscanf(buf,"%s\t%s\t%s\t%f",magzine[i].magid,magzine[i].magname,magzine[i].magunit,&magzine[i].price);}else{nMagzine = i;break;}}
}//读取客户订阅杂志信息
void readcmrinfo(FILE *fp)
{char buf[200] = {0};ncmr = 0;if(fgets(buf,200,fp) != NULL){ncmr = atoi(buf);}for(int i=0;i<ncmr;i++){if(fgets(buf, sizeof(buf), fp) != NULL){sscanf(buf,"%s\t%s\t%d\t%s",cmr[i].account,cmr[i].magid,&cmr[i].subsnum,cmr[i].duetime);}else{ncmr = i;break;}}
}//读取文件信息
bool readfileinfo()
{FILE *fp;if((fp = fopen("customer.txt","r")) == NULL){printf("customer.txt打开失败。");}else{readcustomerinfo(fp);readmagzineinfo(fp);readcmrinfo(fp);fclose(fp);return true;}return false;
}//保存客户信息
void savecustomerinfo(FILE *fp)
{fprintf(fp,"%d\n",nCustomer);for(int i=0;i<nCustomer;i++){fprintf(fp, "%s\t%s\t%s\t%s\t%s\t%s\n",customer[i].account,customer[i].name,customer[i].sex,customer[i].tel,customer[i].unit,customer[i].pwd);}
}//保存杂志信息
void savemagzineinfo(FILE *fp)
{fprintf(fp,"%d\n",nMagzine);for(int i=0;i<nMagzine;i++){fprintf(fp, "%s\t%s\t%s\t%f\n",magzine[i].magid,magzine[i].magname,magzine[i].magunit,magzine[i].price);}
}//保存客户订阅杂志信息
void savecmrinfo(FILE *fp)
{fprintf(fp,"%d\n",ncmr);for(int i=0;i<ncmr;i++){fprintf(fp, "%s\t%s\t%d\t%s\n",cmr[i].account,cmr[i].magid,cmr[i].subsnum,cmr[i].duetime);}
}//保存文件信息
bool savefileinfo()
{FILE *fp;if((fp = fopen("customer.txt","w")) == NULL){printf("customer.txt打开失败。");}else{savecustomerinfo(fp);savemagzineinfo(fp);savecmrinfo(fp);fclose(fp);return true;}return false;
}//查询指定账号的用户信息
Customer *findcustomer(char account[20])
{for(int i=0;i<nCustomer;i++){if(strcmp(account,customer[i].account) == 0)return customer+i;}return NULL;
}Magzine *findmagzine(char magid[20])
{for(int i=0;i<nMagzine;i++){if(strcmp(magid,magzine[i].magid) == 0)return magzine+i;}return NULL;
}//管理员身份登录，首先校验账号密码；再显示功能菜单
bool managerlogin()
{while(1){system("cls");char account[20] = {0};char pwd[20] = {0};printf("请输入账号:");scanf("%s",account);printf("请输入密码:");getchar();char c = 0;int i = 0;while(i < 20 ){c = getch();if (c != '\n' && c != '\r'){pwd[i] = c;putch('*');i++;}elsebreak;}if(strcmp(account,"admin") != 0 || strcmp(pwd,"123456") != 0){printf("\n账号或密码输入错误，是否继续登录(N键退出，其它键继续):");int c = getchar();if(c == 'N' || c=='n')return false;continue;}bmanagerlogin = true;return true;}
}bool finduserinfo(char *account,char *pwd)
{for(int i=0;i<nCustomer;i++){if(strcmp(account,customer[i].account) == 0 && strcmp(pwd,customer[i].pwd) == 0)return true;}return false;
}bool findcmr(char *useraccount,char *magid)
{for(int i=0;i<ncmr;i++){if(strcmp(cmr[i].account,useraccount) == 0 && strcmp(cmr[i].magid,magid) == 0)return true;}return false;
}bool userlogin()
{while(1){system("cls");char account[20] = {0};char pwd[20] = {0};printf("请输入账号:");scanf("%s",account);printf("请输入密码:");getchar();char c = 0;int i = 0;while(i < 20 ){c = getch();if (c != '\n' && c != '\r'){pwd[i] = c;putch('*');i++;}elsebreak;}if(!finduserinfo(account,pwd)){getchar();printf("\n账号或密码输入错误，是否继续登录(N键退出，其它键继续):");int c = getchar();if(c == 'N' || c=='n')return false;continue;}bmanagerlogin = false;strcpy(useraccount,account);return true;}return false;
}//注册新的普通用户
void userreg()
{printf("请输入新的用户账号:");scanf("%s",customer[nCustomer].account);if(findcustomer(customer[nCustomer].account) != NULL){printf("账号已经被使用。\n");return;}printf("请输入新用户姓名:");scanf("%s",customer[nCustomer].name);printf("请输入新用户性别:");scanf("%s",customer[nCustomer].sex);printf("请输入新用户联系电话:");scanf("%s",customer[nCustomer].tel);printf("请输入新用户工作单位:");scanf("%s",customer[nCustomer].unit);//printf("请输入新用户登录密码:");char pwd[20] = {0};char c = 0;int i = 0;while(i++ < 20 && c!= '\n' && c!='\r'){c = getch();pwd[i] = c;putch('*');}strcpy(customer[nCustomer].pwd,pwd);nCustomer++;printf("\n新用户注册完成。\n");
}bool systemlogin()
{while(1){system("cls");printf("                     欢迎使用杂志管理系统\n\n");printf("             1、管理员登录\n");printf("              2、普通用户登录\n");printf("             3、普通用户注册\n");printf("             0、退出系统\n");printf("       \n请输入您的选择：");int sel = 0;scanf("%d",&sel);switch(sel){case 1:return managerlogin();break;case 2:return userlogin();break;case 3:userreg();break;case 0:exit(0);break;}system("pause");}return false;
}void showmanagermenu()
{system("cls");printf("                      欢迎使用杂志管理系统\n\n");printf("             1、查看所有用户订阅杂志信息\n");printf("               2、重置用户登录密码\n");printf("               3、杂志信息管理\n");printf("             4、用户信息查询\n");printf("             5、显示所有信息\n");printf("             6、修改用户信息\n");printf("             7、删除过期订阅信息\n");printf("               8、订阅信息统计\n");printf("             0、退出系统\n");printf("       \n请输入您的选择：");
}void showusermenu()
{system("cls");printf("                      欢迎使用杂志管理系统\n\n");printf("             1、修改用户密码\n");printf("             2、显示所有杂志信息\n");printf("               3、杂志信息查询\n");printf("             4、查看已订阅杂志\n");printf("                5、订阅杂志\n");printf("               6、取消杂志订阅\n");printf("             0、退出系统\n");printf("       \n请输入您的选择：");
}void showallcustomerinfo()
{printf("%20s%20s%20s%20s%20s\n","用户账号","姓名","性别","联系电话","工作单位");for(int i=0;i<nCustomer;i++){printf("%20s%20s%20s%20s%20s\n",customer[i].account,customer[i].name,customer[i].sex,customer[i].tel,customer[i].unit);}
}void showallmagzineinfo()
{printf("%20s%20s%20s%20s\n","杂志刊号","杂志名称","杂志单位","单价");for(int i=0;i<nMagzine;i++){printf("%20s%20s%20s%20.1f\n",magzine[i].magid,magzine[i].magname,magzine[i].magunit,magzine[i].price);}
}void showallcmrinfo()
{printf("%20s%20s%20s%20s\n","用户姓名","杂志名称","订阅数量","订阅期限");for(int i=0;i<ncmr;i++){Customer *pC = findcustomer(cmr[i].account);Magzine *pM = findmagzine(cmr[i].magid);if (pC != NULL && pM != NULL)printf("%20s%20s%20d%20s\n",pC->name,pM->magname,cmr[i].subsnum,cmr[i].duetime);}
}void showallinfo()
{system("cls");printf("                  *************用户信息*************\n\n");showallcustomerinfo();printf("\n                 *************杂志信息*************\n\n");showallmagzineinfo();printf("\n                  ***********用户订阅信息***********\n\n");showallcmrinfo();
}void resetcustomerpwd()
{system("cls");printf("请输入要重置密码的用户账号:");char account[20];scanf("%s",account);getchar();Customer *p = findcustomer(account);if(p==NULL)printf("对不起，您输入的账号不存在。");else{strcpy(p->pwd,"123456");printf("密码重置完成。");}getchar();
}void showcustomerinfo()
{system("cls");printf("请输入需要查询的用户账号:");char account[20];scanf("%s",account);getchar();Customer *p = findcustomer(account);if(p == NULL)printf("对不起，您输入的账号不存在。");else{printf("用户帐号:%20s\n",p->account);printf("姓    名:%20s\n",p->name);printf("性    别:%20s\n",p->sex);printf("联系电话:%20s\n",p->tel);printf("工作单位:%20s\n",p->unit);}
}void updatecustomerinfo()
{system("cls");printf("请输入需要修改信息的用户账号:");char account[20];scanf("%s",account);getchar();Customer *p = findcustomer(account);if(p == NULL)printf("对不起，您输入的账号不存在。");else{while (1){system("cls");printf("            1、姓名                    2、性别\n");printf("         3、联系电话              4、工作单位\n");printf("           0、结束修改\n");printf("\n     请选择修改项：");int sel;scanf("%d", &sel);getchar();if (sel == 0)return;printf("请输入修改后的信息：");switch (sel){case 1:scanf("%s", p->name);break;case 2:scanf("%s", p->sex);break;case 3:scanf("%s", p->tel);break;case 4:scanf("%s", p->unit);break;case 0:return;}}}
}//删除过期订阅信息
void removeoverdueinfo()
{//cmr[500] ncmrtime_t timep;struct tm *p;time(&timep);p = localtime(&timep);char now[9] = { 0 };sprintf(now, "%04d%02d%02d", p->tm_year + 1900, p->tm_mon+1, p->tm_mday);printf("以下过期订阅信息被删除:\n");printf("%20s%20s%20s%20s\n", "用户姓名", "杂志名称", "订阅数量", "订阅期限");int t = 0;for (int i = 0; i < ncmr; i++){if (strcmp(cmr[i].duetime,now)>=0){cmr[t++] = cmr[i];}else{Customer *pC = findcustomer(cmr[i].account);Magzine *pM = findmagzine(cmr[i].magid);printf("%20s%20s%20d%20s\n", pC->name, pM->magname, cmr[i].subsnum, cmr[i].duetime);}}ncmr = t;
}void showstatmenu()
{system("cls");printf("              ***************订阅信息统计***************\n\n");printf("           1、各杂志订阅量及金额统计\n");printf("            2、各用户订阅量及金额统计\n");printf("            3、各杂志订阅性别订阅量及金额统计\n");printf("            4、各杂志订阅期限统计\n");printf("          0、结束统计\n");printf("\n     请输入您的选择:");
}//统计杂志订阅量及金额
void showmagsubs()
{system("cls");int i, j;int subsnum[50] = { 0 };for (i = 0; i < nMagzine; i++){for (j = 0; j < ncmr; j++){if (strcmp(cmr[j].magid, magzine[i].magid) == 0)subsnum[i] += cmr[j].subsnum;}}printf("%20s%10s%10s%10s\n","杂志名称","订阅数量","单价","金额");for (i = 0; i < nMagzine; i++){if (subsnum[i] > 0)printf("%20s%10d%10.1f%10.1f\n", magzine[i].magname, subsnum[i], magzine[i].price, magzine[i].price*subsnum[i]);}
}//统计用户订阅量及金额
void showcustomersubs()
{system("cls");int i, j;int subsnum[50] = { 0 };float cost[50] = { 0 };for (i = 0; i < nCustomer; i++){for (j = 0; j < ncmr; j++){if (strcmp(cmr[j].account, customer[i].account) == 0){Magzine *pM = findmagzine(cmr[j].magid);if (pM != NULL){subsnum[i] += cmr[j].subsnum;cost[i] += pM->price * cmr[j].subsnum;}}}}printf("%20s%10s%10s\n", "用户名称", "订阅数量", "金额");for (i = 0; i < nCustomer; i++){if (subsnum[i] > 0)printf("%20s%10d%10.1f\n", customer[i].name, subsnum[i], cost[i]);}
}//各杂志订阅用户性别订阅量及金额统计
void showsexsubs()
{system("cls");int i, j;int subsnum[2] = { 0 };float cost[2] = { 0 };for (i = 0; i < nCustomer; i++){for (j = 0; j < ncmr; j++){if (strcmp(cmr[j].account, customer[i].account) == 0){Magzine *pM = findmagzine(cmr[j].magid);if (pM != NULL){int s = 0;if (strcmp(customer[i].sex, "女") == 0)s = 1;subsnum[s] += cmr[j].subsnum;cost[s] += pM->price * cmr[j].subsnum;}}}}printf("%10s%10s%10s\n", "性别", "订阅数量", "金额");printf("%10s%10d%10.1f\n", "男", subsnum[0], cost[0]);printf("%10s%10d%10.1f\n", "女", subsnum[1], cost[1]);
}void showoverduesubs()
{system("cls");printf("请输入需要查询的订阅有效日期（例如：20210618）：");char overdue[20];scanf("%s", overdue);getchar();printf("\n订阅期限在%s之前的订阅信息有：\n", overdue);printf("%20s%20s%20s%20s\n", "用户姓名", "杂志名称", "订阅数量", "订阅期限");for (int i = 0; i < ncmr; i++){if (strcmp(cmr[i].duetime, overdue) < 0){Customer *pC = findcustomer(cmr[i].account);Magzine *pM = findmagzine(cmr[i].magid);if (pC != NULL && pM != NULL){printf("%20s%20s%20d%20s\n", pC->name,pM->magname,cmr[i].subsnum,cmr[i].duetime);}}}
}//统计功能
void statcmrinfo()
{while (1){showstatmenu();int sel;scanf("%d", &sel);switch (sel){case 1:      //各杂志订阅量及金额统计showmagsubs();break;case 2:        //各用户订阅量及金额统计showcustomersubs();break;  case 3:     //各杂志订阅用户性别订阅量及金额统计showsexsubs();break;case 4:      //各杂志订阅期限统计showoverduesubs();break;case 0:      //统计结束return;}system("pause");}
}void showmagzinemanmenu()
{system("cls");printf("              ***************杂志信息管理**************\n\n");printf("            1、增加杂志          2、删除杂志\n");printf("           3、修改杂志          4、查询杂志\n");printf("           0、结束管理\n");printf("\n     请输入您的选择：");
}void addmagzine()
{while (1){printf("请输入新杂志刊号:");scanf("%s", magzine[nMagzine].magid);if (findmagzine(magzine[nMagzine].magid) != NULL)printf("新杂志刊号已经存在，请重新输入。\n");elsebreak;}printf("请输入新杂志名称:");scanf("%s", magzine[nMagzine].magname);printf("请输入新杂志单位:");scanf("%s", magzine[nMagzine].magunit);printf("请输入新杂志单价:");scanf("%f", &magzine[nMagzine].price);nMagzine++;printf("新杂志增加完成。\n");
}void removemagzine()
{printf("请输入需要删除的杂志刊号:");char magid[20];scanf("%s", magid);if (findmagzine(magid) == NULL)printf("指定要删除的杂志刊号不存在。\n");int i,j;//从杂志数组中删除指定刊号的杂志for (i = 0; i < nMagzine; i++){if (strcmp(magid, magzine[i].magid) == 0){for (j = i; j < nMagzine; j++)magzine[j] = magzine[j + 1];nMagzine--;break;}}//从订阅信息中删除指定刊号杂志的订阅信息for (i = 0; i < ncmr; i++){if (strcmp(magid, cmr[i].magid) == 0){for (j = i; j < ncmr; j++)cmr[j] = cmr[j + 1];ncmr--;i--;}}printf("删除杂志完成。\n");
}void updatemagzine()
{printf("请输入需要删除的杂志刊号:");char magid[20];scanf("%s", magid);Magzine *pM = findmagzine(magid);if (pM == NULL)printf("指定要删除的杂志刊号不存在。\n");else{while (1){system("cls");printf("         1、杂志名称          2、杂志单位\n");printf("           3、单价                 0、结束修改\n");printf("\n        请选择修改项：");int sel;scanf("%d", &sel);getchar();if (sel == 0)return;printf("请输入修改后的信息：");switch (sel){case 1:scanf("%s", pM->magname);break;case 2:scanf("%s", pM->magunit);break;case 3:scanf("%f", &pM->price);break;case 0:return;}}}
}void querymagzine()
{printf("请输入需要查询的杂志刊号:");char magid[20];scanf("%s", magid);Magzine *pM = findmagzine(magid);if (pM == NULL)printf("指定要查询的杂志刊号不存在。\n");else{printf("杂志刊号:%20s\n", pM->magid);printf("杂志名称:%20s\n", pM->magname);printf("杂志单位:%20s\n", pM->magunit);printf("单    价:%20g\n", pM->price);}
}//杂志管理
void magzineman()
{while (1){showmagzinemanmenu();int sel;scanf("%d", &sel);switch (sel){case 1:  //增加杂志addmagzine();break;case 2: //删除杂志removemagzine();break;case 3:  //修改杂志updatemagzine();break;case 4://查询杂志querymagzine();break;case 0:return;}system("pause");}
}void updateuserpwd()
{Customer *pC = findcustomer(useraccount);if(pC == NULL){printf("错误：当前用户不存在。\n");return;}printf("请输入原密码:");char pwd[20];char c = 0;int i = 0;while(i < 20 ){c = getch();if (c != '\n' && c != '\r'){pwd[i] = c;putch('*');i++;}elsebreak;}if(strcmp(pC->pwd,pwd)==0){printf("\n密码输入错误。\n");return;}printf("\n请输入新密码:");c = 0;i = 0;while(i < 20 ){c = getch();if (c != '\n' && c != '\r'){pC->pwd[i] = c;putch('*');i++;}elsebreak;}printf("\n密码修改完成。\n");
}void querysubsmagzine()
{int i;printf("%20s%20s%10s%10s%10s\n","杂志刊号","杂志名称","订阅数量","单价","订阅期限");for(i=0;i<ncmr;i++){if(strcmp(cmr[i].account,useraccount) == 0){Magzine *pM = findmagzine(cmr[i].magid);if(pM != NULL)printf("%20s%20s%10d%10.1f%10s\n",pM->magid,pM->magname,cmr[i].subsnum,pM->price,cmr[i].duetime);}}
}void subsmagzine()
{printf("请输入需要订阅的杂志刊号:");strcpy(cmr[ncmr].account,useraccount);scanf("%s",cmr[ncmr].magid);if(findmagzine(cmr[ncmr].magid) == NULL){printf("指定的杂志不存在。\n");return;}if(findcmr(useraccount,cmr[ncmr].magid) != NULL){printf("指定的杂志已经订阅。\n");return;}printf("请输入需要订阅的数量:");scanf("%d",&cmr[ncmr].subsnum);printf("请输入订阅期限（输入格式：20210617）:");scanf("%s",cmr[ncmr].duetime);ncmr++;printf("订阅成功。\n");
}void removecmr()
{printf("请输入需要取消订阅的杂志刊号:");char magid[20];scanf("%s",magid);int i,j;int t = 0;for (int i = 0; i < ncmr; i++){//找到订阅信息if(strcmp(useraccount,cmr[i].account) != 0 || strcmp(magid,cmr[i].magid) != 0)cmr[t++] = cmr[i];}ncmr = t;printf("杂志取消订阅完成。\n");
}void main()
{system("mode con cols=120 lines=40");if(!readfileinfo()){system("pause");}//进行系统登录，登录后才能使用系统bool blogin = systemlogin();if(blogin){while(1){//如果管理员登录，显示管理员功能if(bmanagerlogin){showmanagermenu();int sel = 0;scanf("%d", &sel);getchar();switch (sel){case 1: //查看所有用户订阅杂志信息system("cls");showallcmrinfo();break;case 2: //重置用户登录密码resetcustomerpwd();break;case 3:  //杂志信息管理magzineman();break;case 4:  //用户信息查询showcustomerinfo();break;case 5:    //显示所有信息showallinfo();break;case 6: //修改用户信息updatecustomerinfo();break;case 7:  //删除过期订阅信息removeoverdueinfo();break;case 8: //订阅信息统计statcmrinfo();break;case 0:{getchar();printf("是否需要保存用户信息(Y/N)？");char c = getchar();if (c == 'Y' || c == 'y')savefileinfo();exit(0);}}system("pause");}else //否则普通用户登录显示普通用户功能{showusermenu();int sel = 0;scanf("%d", &sel);switch (sel){case 1:         //修改用户密码updateuserpwd();break;case 2:           //显示所有杂志信息showallmagzineinfo();break;case 3:            //杂志信息查询querymagzine();break;case 4:            //查看已订阅杂志querysubsmagzine();break;case 5:           //订阅杂志subsmagzine();break;case 6:           //取消杂志订阅removecmr();break;case 0:{getchar();printf("是否需要保存用户信息(Y/N)？");char c = getchar();if (c == 'Y' || c == 'y')savefileinfo();exit(0);}}system("pause");}}}}

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