图书管理系统

应同学请求帮忙写个简易版的图书管理系统，毕竟是个大一菜鸟，写出来还是蛮有趣的。

需求是

书店图书信息管理系统
一、软件开发目的 
该软件主要是使用C语言设计开发一个简单的书店图书管理系统，实现对图书信息的输入、增加、删除等功能要求。 
二、数据结构
程序中采用结构体数组存储图书的基本信息包括图书编号、书名、作者（要考虑多个作者情况）、出版社、出版日期、ISBN、版次、定价等
结构体成员包括图书编号、书名、作者、出版社、出版日期、ISBN、版次、定价、数量等
三、软件功能说明
1、 各种基本数据的录入和保存。如：图书资料基本信息录入包括图书编号、书名、作者（要考虑多个作者情况）、出版社、出版日期、ISBN、版次、定价、数量等。输入数据信息可以直接在内存操作，也可以保存在文件。
2、各种基本数据的修改。即：允许对以及录入的数据重新进行编辑、修改。可按图书编号修改其他信息如出版日期等，需要提供是否修改的确认信息。除图书编号不能修改外，其余所有信息均能够修改。
3、基本数据的插入。如：有新书进店可在图书信息中插入一条新信息等。
4、各种基本数据的删除。如：某图书全部下架可删除该书的相关信息等。
基于各种数据的查询。
此功能需要设置二级菜单。可提供按各个不同字段查询图书信息，如按图书编号，书名查询；查询时可实现模糊查询，如按书名查输入“计算机”后，书名中含有“计算机”的所有书籍全部显示。6、数据统计
（1）统计某月各种图书的销售量和销售额。
（2）按照图书的销售量排序，显示年度或季度畅销书排行榜，要求至少排出前十名。


四、软件验收标准 
1、有较为美观简洁大方的菜单，能保证用户方便、直观、快捷的使用软件的各项功能。
系统菜单功能项：
信息输入
信息显示
信息查询
删除信息
修改信息
增加信息
数据统计
退出系统


注意：要求每执行一个具体的功能之后程序将重新显示菜单。
2、有严密正确的数据验证功能和数据处理功能，能够使用系统功能模块。

3、系统要有一定的可靠性和稳定性。

#include
#include
#include
#include
using namespace std;
struct node
{
    char bianhao[30];
    char shuming[30];
    char zuoze[30];
    char chuban[30];
    char riqi[30];
    char ISBN[30];
    int banci;
    int dingjia;
    int shuliang;
    int xiaoliang;
    int xiaoer;
    struct node *next;
} xx[100000];
struct node *head;
void add_x();
void in();
void out();
void fin();
void mov();
void xiu();
void add();
void toj();
void menu();
void menu1();
void menu2();
void menu3();
int zhuanyi();
void out1(int n);
bool cmp(struct node a, struct node b){
    return a.xiaoer > b.xiaoer;
}
int pipei(char *s1, char *s2);
int main()
{
    int flag = 1;
    int x;
    head = (struct node *)malloc(sizeof(struct node));
    head -> next = NULL;
    while(flag)
    {
        menu();
        scanf("%d", &x);
        while(x < 1 || x > 8)
        {
            printf("输入信息错误，请重新输入\n");
            getchar();
            getchar();
            menu();
            scanf("%d", &x);
        }
        switch(x)
        {
        case 1:
            in();
            break;
        case 2:
            out();
            break;
        case 3:
            fin();
            break;
        case 4:
            mov();
            break;
        case 5:
            xiu();
            break;
        case 6:
            add();
            break;
        case 7:
            toj();
            break;
        case 8:
            flag = 0;
            break;
        }
    }
}
void out1(int n){
    int i;
    system("cls");
    printf("%-15s%-15s%-15s%-15s%-15s%-15s%-15s%-15s%-15s%-15s%-15s\n", "图书编号", "书名", "作者","出版社", "出版日期", "ISDN", "版次", "定价", "数量", "销售量", "销售额");
    for(i = 0; i <= n - 1; i++){
        printf("%-15s%-15s%-15s%-15s%-15s%-15s%-15d%-15d%-15d%-15d%-15d\n",xx[i].bianhao,xx[i].shuming, xx[i].zuoze, xx[i].chuban,xx[i].riqi, xx[i].ISBN, xx[i].banci, xx[i].dingjia, xx[i].shuliang, xx[i].xiaoliang, xx[i].xiaoer);
    }
    getchar();
    getchar();
}
int zhuanyi(){
    int cnt = 0;
    struct node *p;
    p = head -> next;
    while(p){
        strcpy(xx[cnt].bianhao,p -> bianhao);
        strcpy(xx[cnt].shuming,p -> shuming);
        strcpy(xx[cnt].zuoze,p -> zuoze);
        strcpy(xx[cnt].chuban,p -> chuban);
        strcpy(xx[cnt].riqi,p -> riqi);
        strcpy(xx[cnt].ISBN,p -> ISBN);
        xx[cnt].banci = p -> banci;
        xx[cnt].dingjia = p -> dingjia;
        xx[cnt].shuliang = p -> shuliang;
        xx[cnt].xiaoliang = p -> xiaoliang;
        xx[cnt].xiaoer = p -> xiaoer;
        p = p -> next;
        cnt++;
    }
    return cnt;
}
void menu2()
{
    system("cls");
    printf("请选择修改的内容:\n");
    printf("1 书名\n");
    printf("2 作者\n");
    printf("3 出版社\n");
    printf("4 出版日期\n");
    printf("5 ISBN\n");
    printf("6 版次\n");
    printf("7 定价\n");
    printf("8 数量\n");
    printf("9 退出\n");
    printf("请输入编号:\n");
}
void menu3(){
    system("cls");
    printf("请选择操作:\n");
    printf("1 输入销售量\n");
    printf("2 显示年度销售排行:\n");
    printf("3 退出\n");
    printf("请输入编号:\n");
}
void menu1()
{
    system("cls");
    printf("查询方式:\n");
    printf("1 图书编号\n");
    printf("2 书名\n");
    printf("3 作者\n");
    printf("4 出版社\n");
    printf("5 出版日期\n");
    printf("6 ISBN\n");
    printf("7 退出\n");
    printf("请选择查询方式:\n");
}
void menu()
{
    system("cls");
    printf("1 信息输入\n");
    printf("2 信息显示\n");
    printf("3 信息查询\n");
    printf("4 删除信息\n");
    printf("5 修改信息\n");
    printf("6 增加信息\n");
    printf("7 数据统计\n");
    printf("8 退出系统\n");
    printf("请输入编号：");

}
int pipei(char *s1, char *s2)
{
    int i, j;
    int flag = 0;
    int l1 = strlen(s1);
    int l2 = strlen(s2);
    int cnt;
    for(i = 0; i < l1 - l2 + 1; i++)
    {
        cnt = i;
        for(j = 0; j < l2; j++)
        {
            if(s2[j] != s1[cnt++])break;
        }
        if(j == l2)
        {
            flag = 1;
            break;
        }
    }
    return flag;
}
void in()
{
    add_x();
    system("cls");
    printf("1 继续输入\n");
    printf("2 退出\n");
    printf("请输入:\n");
    int x;
    scanf("%d", &x);
    while(x < 1 || x > 2)
    {
        printf("输入信息错误，请重新输入\n");
        getchar();
        getchar();
        system("cls");
        printf("1 继续输入\n");
        printf("2 退出\n");
        printf("请输入:\n");
        scanf("%d", &x);
    }
    if(x == 1)in();
    if(x == 2)return;
    return;
}
void out()
{
    system("cls");
    printf("%-15s%-15s%-15s%-15s%-15s%-15s%-15s%-15s%-15s%-15s%-15s\n", "图书编号", "书名", "作者","出版社", "出版日期", "ISDN", "版次", "定价", "数量", "销售量", "销售额");
    struct node *p;
    p = head -> next;
    if(p == NULL)
    {
        system("cls");
        printf("无图书信息\n");
    }
    else
    {
        while(p)
        {
            printf("%-15s%-15s%-15s%-15s%-15s%-15s%-15d%-15d%-15d%-15d%-15d\n",p -> bianhao, p -> shuming, p -> zuoze, p -> chuban,p -> riqi, p -> ISBN, p -> banci, p -> dingjia, p ->shuliang, p -> xiaoliang, p -> xiaoer);
            p = p -> next;
        }
    }
    printf("\n%s\n", "请全屏观看！ 按回车退出");
    getchar();
    getchar();
    return;
}
void fin()
{
    int flag = 1;
    while(flag)
    {
        system("cls");
        menu1();
        int x;
        scanf("%d", &x);
        while(x < 1 || x > 7)
        {
            printf("输入信息错误!请重新输入\n");
            getchar();
            getchar();
            system("cls");
            menu1();
            scanf("%d", &x);
        }
        char ch[30];
        struct node *p;
        p = head -> next;
        int flag1 = 0;
        switch(x)
        {
        case 1:
        {
            system("cls");
            flag1 = 0;
            printf("请输入图书编号:\n");
            scanf("%s", ch);
            if(p == NULL)
            {
                flag1 = 0;
            }
            else
            {
                while(p)
                {
                    if(pipei(p -> bianhao, ch))
                    {
                        flag1 = 1;
                        break;
                    }
                    p = p -> next;
                }
                if(flag1)
                {
                    printf("%-15s%-15s%-15s%-15s%-15s%-15s%-15s%-15s%-15s\n", "图书编号", "书名", "作者","出版社", "出版日期", "ISDN", "版次", "定价", "数量");
                    while(p)
                    {
                        if(pipei(p -> bianhao, ch))
                        {
                            printf("%-15s%-15s%-15s%-15s%-15s%-15s%-15d%-15d%-15d\n",p -> bianhao, p -> shuming, p -> zuoze, p -> chuban,p -> riqi, p -> ISBN, p -> banci, p -> dingjia, p ->shuliang);
                        }
                        p = p -> next;
                    }
                }
            }
        }
        break;
        case 2:
        {
            system("cls");
            flag1 = 0;
            printf("请输入图书书名:\n");
            scanf("%s", ch);
            if(p == NULL)
            {
                flag1 = 0;
            }
            else
            {
                while(p)
                {
                    if(pipei(p -> shuming, ch))
                    {
                        flag1 = 1;
                        break;
                    }
                    p = p -> next;
                }
                if(flag1)
                {
                    printf("%-15s%-15s%-15s%-15s%-15s%-15s%-15s%-15s%-15s\n", "图书编号", "书名", "作者","出版社", "出版日期", "ISDN", "版次", "定价", "数量");
                    while(p)
                    {
                        if(pipei(p ->shuming, ch))
                        {
                            printf("%-15s%-15s%-15s%-15s%-15s%-15s%-15d%-15d%-15d\n",p -> bianhao, p -> shuming, p -> zuoze, p -> chuban,p -> riqi, p -> ISBN, p -> banci, p -> dingjia, p ->shuliang);
                        }
                        p = p -> next;
                    }
                }
            }
        }
        break;
        case 3:
        {
            system("cls");
            flag1 = 0;
            printf("请输入图书作者:\n");
            scanf("%s", ch);
            if(p == NULL)
            {
                flag1 = 0;
            }
            else
            {
                while(p)
                {
                    if(pipei(p -> zuoze, ch))
                    {
                        flag1 = 1;
                        break;
                    }
                    p = p -> next;
                }
                if(flag1)
                {
                    printf("%-15s%-15s%-15s%-15s%-15s%-15s%-15s%-15s%-15s\n", "图书编号", "书名", "作者","出版社", "出版日期", "ISDN", "版次", "定价", "数量");
                    while(p)
                    {
                        if(pipei(p -> zuoze, ch))
                        {
                            printf("%-15s%-15s%-15s%-15s%-15s%-15s%-15d%-15d%-15d\n",p -> bianhao, p -> shuming, p -> zuoze, p -> chuban,p -> riqi, p -> ISBN, p -> banci, p -> dingjia, p ->shuliang);
                        }
                        p = p -> next;
                    }
                }
            }
        }
        break;
        case 4:
        {
            system("cls");
            flag1 = 0;
            printf("请输入图书出版社:\n");
            scanf("%s", ch);
            if(p == NULL)
            {
                flag1 = 0;
            }
            else
            {
                while(p)
                {
                    if(pipei(p -> chuban, ch))
                    {
                        flag1 = 1;
                        break;
                    }
                    p = p -> next;
                }
                if(flag1)
                {
                    printf("%-15s%-15s%-15s%-15s%-15s%-15s%-15s%-15s%-15s\n", "图书编号", "书名", "作者","出版社", "出版日期", "ISDN", "版次", "定价", "数量");
                    while(p)
                    {
                        if(pipei(p -> chuban, ch))
                        {
                            printf("%-15s%-15s%-15s%-15s%-15s%-15s%-15d%-15d%-15d\n",p -> bianhao, p -> shuming, p -> zuoze, p -> chuban,p -> riqi, p -> ISBN, p -> banci, p -> dingjia, p ->shuliang);
                        }
                        p = p -> next;
                    }
                }
            }
        }
        break;
        case 5:
        {
            system("cls");
            flag1 = 0;
            printf("请输入图书出版日期:\n");
            scanf("%s", ch);
            if(p == NULL)
            {
                flag1 = 0;
            }
            else
            {
                while(p)
                {
                    if(pipei(p -> riqi, ch))
                    {
                        flag1 = 1;
                        break;
                    }
                    p = p -> next;
                }
                if(flag1)
                {
                    printf("%-15s%-15s%-15s%-15s%-15s%-15s%-15s%-15s%-15s\n", "图书编号", "书名", "作者","出版社", "出版日期", "ISDN", "版次", "定价", "数量");
                    while(p)
                    {
                        if(pipei(p -> riqi, ch))
                        {
                            printf("%-15s%-15s%-15s%-15s%-15s%-15s%-15d%-15d%-15d\n",p -> bianhao, p -> shuming, p -> zuoze, p -> chuban,p -> riqi, p -> ISBN, p -> banci, p -> dingjia, p ->shuliang);
                        }
                        p = p -> next;
                    }
                }
            }
        }
        break;
        case 6:
        {
            system("cls");
            flag1 = 0;
            printf("请输入图书ISBN:\n");
            scanf("%s", ch);
            if(p == NULL)
            {
                flag1 = 0;
            }
            else
            {
                while(p)
                {
                    if(pipei(p -> ISBN, ch))
                    {
                        flag1 = 1;
                        break;
                    }
                    p = p -> next;
                }
                if(flag1)
                {
                    printf("%-15s%-15s%-15s%-15s%-15s%-15s%-15s%-15s%-15s\n", "图书编号", "书名", "作者","出版社", "出版日期", "ISDN", "版次", "定价", "数量");
                    while(p)
                    {
                        if(pipei(p -> ISBN, ch))
                        {
                            printf("%-15s%-15s%-15s%-15s%-15s%-15s%-15d%-15d%-15d\n",p -> bianhao, p -> shuming, p -> zuoze, p -> chuban,p -> riqi, p -> ISBN, p -> banci, p -> dingjia, p ->shuliang);
                        }
                        p = p -> next;
                    }
                }
            }
        }
        break;
        case 7:
            flag = 0;
            break;
        }
        if(flag1 == 0 && x != 7)printf("无该图书信息!\n");
        if(x != 7)
        {
            printf("请按回车退出!\n");
            getchar();
            getchar();
        }
    }
}
void mov()
{
    system("cls");
    printf("请输入需要删除的图书编号:\n");
    char sh[30];
    scanf("%s", sh);
    struct node *p, *q;
    p = head -> next;
    q = head;
    if(p == NULL)
    {
        system("cls");
        printf("无图书信息! 按回车继续!\n");
    }
    while(p)
    {
        if(strcmp(p -> bianhao, sh) == 0)
        {
            system("cls");
            printf("%-15s%-15s%-15s%-15s%-15s%-15s%-15s%-15s%-15s\n", "图书编号", "书名", "作者","出版社", "出版日期", "ISDN", "版次", "定价", "数量");
            printf("%-15s%-15s%-15s%-15s%-15s%-15s%-15d%-15d%-15d\n",p -> bianhao, p -> shuming, p -> zuoze, p -> chuban,p -> riqi, p -> ISBN, p -> banci, p -> dingjia, p ->shuliang);
            printf("是否删除?(yes/no)\n请输入:\n");
            char ch[10];
            getchar();
            scanf("%s", ch);
            printf("%s\n", ch);
            if(strcmp(ch, "yes") == 0)
            {
                system("cls");
                q -> next = p -> next;
                free(p);
                printf("删除成功! 按回车退出!\n");
            }
            else if(strcmp(ch, "no") == 0)
            {
                break;
            }
            else printf("输入信息错误! 按回车退出!\n");
            break;
        }
        else
        {
            printf("无该图书信息:\n");
            break;
        }
        p = p -> next;
        q = q -> next;
    }
    getchar();
    getchar();
    return;
}
void xiu()
{
    system("cls");
    int flag = 1;
    char sh[30];
    printf("请输入修改图书编号:\n");
    scanf("%s", sh);
    int flag1 = 0;
    struct node *p;
    p = head -> next;
    while(p)
    {
        if(strcmp(p -> bianhao, sh) == 0)
        {
            flag1 = 1;
            break;
        }
        p = p -> next;
    }
    if(flag1)
    {
        while(flag)
        {
            menu2();
            int x;
            scanf("%d", &x);
            while(x < 1 || x > 9)
            {
                printf("输入信息错误! 请重新输入! 按回车继续!\n\n");
                getchar();
                getchar();
                menu2();
                scanf("%d", &x);
            }
            switch(x)
            {
            case 1:
            {
                system("cls");
                printf("请输入新书名:\n");
                char pp[30];
                scanf("%s", pp);
                strcpy(p -> shuming, pp);
            }
            break;
            case 2:
            {
                system("cls");
                printf("请输入新作者:\n");
                char pp[30];
                scanf("%s", pp);
                strcpy(p -> zuoze, pp);
            }
            break;
            case 3:
            {
                system("cls");
                printf("请输入新出版社:\n");
                char pp[30];
                scanf("%s", pp);
                strcpy(p -> chuban, pp);
            }
            break;
            case 4:
            {
                system("cls");
                printf("请输入新出版日期:\n");
                char pp[30];
                scanf("%s", pp);
                strcpy(p -> riqi, pp);
            }
            break;
            case 5:
            {
                system("cls");
                printf("请输入新ISBN:\n");
                char pp[30];
                scanf("%s", pp);
                strcpy(p -> ISBN, pp);
            }
            break;
            case 6:
            {
                system("cls");
                printf("请输入新版次:\n");
                int pp;
                scanf("%d", &pp);
                p -> banci = pp;
            }
            break;
            case 7:
            {
                system("cls");
                printf("请输入新定价:\n");
                int pp;
                scanf("%d", &pp);
                p -> dingjia = pp;
            }
            break;
            case 8:
            {
                system("cls");
                printf("请输入新数量:\n");
                int pp;
                scanf("%d", &pp);
                p -> shuliang = pp;
            }
            break;
            case 9:
            {
                flag = 0;
                break;
            }
            }
        }
    }
    else{
        printf("无该图书信息:\n");
        getchar();
        getchar();
    }
}
void add()
{
    add_x();
    system("cls");
    printf("增加成功，按回车退出!\n");
    getchar();
    getchar();
    return;
}
void toj()
{
    //menu3();
    int flag = 1;
    while(flag){
        system("cls");
        menu3();
        int x;
        scanf("%d", &x);
        while(x < 1 || x > 3){
            printf("输入信息错误! 请重新输入!\n");
            getchar();
            getchar();
            menu3();
            scanf("%d", &x);
        }
        switch(x){
            case 1:{
                system("cls");
                printf("请输入图书编号:\n");
                char tt[30];
                scanf("%s", tt);
                system("cls");
                printf("请输入销售量:\n");
                int yy;
                scanf("%d", &yy);
                struct node *p;
                p = head -> next;
                int flag1 = 0;
                while(p){
                    if(strcmp(p -> bianhao, tt) == 0){
                        flag1 = 1;
                        break;
                    }
                    p = p -> next;
                }
                if(flag1){
                        while(yy < 0 || yy > p -> shuliang){
                            system("cls");
                            printf("输入销量超过库存，数据错误, 按回车继续!\n");
                            getchar();
                            getchar();
                            system("cls");
                            printf("请重新输入销量:\n");
                            scanf("%d", &yy);
                        }
                    p -> xiaoliang += yy;
                    p -> xiaoer += p -> xiaoliang * p -> dingjia;
                }
                else{
                    printf("无该图书信息!\n");
                    getchar();
                    getchar();
                }
            }break;
            case 2:{
                system("cls");
                int uu = zhuanyi();
                sort(xx, xx + uu, cmp);
                out1(uu);
            }break;
            case 3:{
                flag = 0;
//                getchar();
//                getchar();
            }break;
        }
    }
//    getchar();
//    getchar();
}
void add_x()
{
    struct node *p, *tail;
    int i;
    tail = head;
    while(tail -> next)
    {
        tail = tail -> next;
    }
    p = (struct node *)malloc(sizeof(struct node));
    for(i = 1; i <= 9; i++)
    {
        int flag1 = 0;
        system("cls");
        struct node *pp;
        pp = head -> next;
        switch(i)
        {
        case 1:
            printf("请输入编号:\n");
            scanf("%s", p -> bianhao);
            while(pp){
                if(strcmp(pp -> bianhao, p -> bianhao) == 0){
                    flag1 = 1;
                    break;
                }
                pp = pp -> next;
            }
            break;
        case 2:
            printf("请输入书名:\n");
            scanf("%s", p -> shuming);
            break;
        case 3:
            printf("请输入作者:\n");
            scanf("%s", p -> zuoze);
            break;
        case 4:
            printf("请输入出版社:\n");
            scanf("%s", p -> chuban);
            break;
        case 5:
            printf("请输入出版日期:\n");
            scanf("%s", p -> riqi);
            break;
        case 6:
            printf("请输入ISBN:\n");
            scanf("%s", p -> ISBN);
            break;
        case 7:
            printf("请输入版次(输入数字):\n");
            scanf("%d", &p -> banci);
            break;
        case 8:
            printf("请输入定价(输入数字):\n");
            scanf("%d", &p -> dingjia);
            break;
        case 9:
            printf("请输入数量(输入数字):\n");
            scanf("%d", &p -> shuliang);
            break;
        }
        if(flag1)break;
    }
    if(i != 10){
        system("cls");
        printf("输入编号于库存图书编号重复! 请重新输入! 按回车继续!\n");
        getchar();
        getchar();
        return;
    }
    p -> xiaoliang = 0;
    p -> xiaoer = 0;
    p -> next = NULL;
    tail -> next = p;
}