图书管理小系统

昨天一朋友要我帮她写个“图书管理小系统”，一时嘴贱就答应了。

要求如下：

看着还可以，昨晚把基本框架写了下，今天写了一下午，接近600行，总算写完了。由于她明天就要交，我就赶了点，很多地方还没写好。

但总体来说也让我对文件输出输入有了更进一步的了解了，不过没有用结构体指针，用了的话应该可以 节约很多内存。看以后有没有时间

去完善它吧。

发几个界面看看：

先把代码贴下：

#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <windows.h>
#define MAX 20
struct Borrow{
    char name[MAX];     //用户名
    int num; //     借书数量
    int number[MAX];     //书的编号
    char book[MAX][MAX];   //书名
}bor[5000];

struct Student{
    char name[MAX]; //用户名
    char password[MAX]; //密码
    //Borrow book;  //借书信息
    char sex[MAX];  //性别
    //struct student *next;   //结构体指针
}stu[5000];

struct Book{
    int number;     //编号
    char bookName[MAX];  //书名
    int num;        //书的数量
}book[10000];
//stu *head;  //指针头
int i, j, l, n, flag, cnt, k, MAX_BOR, MAX_BOOK;
void regist(){  //注册功能
    system("cls");
    FILE *fin,*fout;
    fin = fopen("user.txt","r+");
    char s[20],ss[20],sss[10];
    if(fin!=NULL){
        while(fscanf(fin,"%s %s %s",stu[i].name,stu[i].password,stu[i].sex)!=EOF){
            i++;
        }
    }
    fclose(fin);
    fout = fopen("user.txt","a+");
    system("cls");
    do{
        printf("请输入用户名：");
        scanf("%s",s);
        for(j = 0; j < i; j ++){
            if(!strcmp(s,stu[j].name)){
                system("cls");
                printf("该用户名已经注册了！");
                goto tt;
            }
        }
        printf("
请输入密码：");
        scanf("%s",ss);
        printf("
请输入性别(男或女):");
        scanf("%s",sss);
        fprintf(fout,"%s	%s	%s
",s,ss,sss);
        break;
        tt:;
    }while(1);
    fclose(fout);
}

void login(){           //登入功能
    n = 3;
    char s[20],ss[20];
    FILE *fin;
    fin = fopen("user.txt","r+");
    i = 0;
    while(fscanf(fin,"%s %s %s",stu[i].name,stu[i].password,stu[i].sex)!=EOF){
        i++;
    }
    fclose(fin);
    flag = 0;
    system("cls");
    do{
        printf("


		请输入用户名：");
        scanf("%s",s);
        printf("
		请输入密码  ：");
        scanf("%s",ss);
        for(j = 0; j < i; j ++){
            if(!strcmp(s,stu[j].name)&&!strcmp(ss,stu[j].password)){
                cnt = j;    //标记登入的用户下标
                flag = 1;
                break;
            }
        }
        if(flag)break;
        system("cls");
        printf("用户名或密码错误！
");
    }while(n--);

}

void print(){           //显示用户借书信息
    void loadBor();
    loadBor();
    for(j = 0; j < MAX_BOR; j ++){
        if(!strcmp(stu[cnt].name,bor[j].name)){
            break;
        }
    }
    if(j == MAX_BOR){
        printf("|					借书为0。|
");
    }else{
        printf("|		已经借的书为：			|
");
        if(bor[j].num == 0){
            printf("|			借书为0.		|
");
        }else{
            for(l = 0; l < bor[j].num; l ++){
                printf("|		%d	%s		|
",bor[j].number[l],bor[j].book[l]);
            }
        }
        printf("|						|
");

    }
    printf("|_______________________________________________|

");
}

void loadBor(){         //加载借书信息
    FILE *fin;
    fin = fopen("borrow.txt","r+");
    k = 0;
    while(fscanf(fin,"%s %d",bor[k].name,&bor[k].num)!=EOF){
        for(j = 0; j < bor[k].num; j++){
            fscanf(fin,"%d %s",&bor[k].number[j],bor[k].book[j]);
           // printf("%s	",bor[k].book[j]);
        }
        k++;
    }
    MAX_BOR = k;
    fclose(fin);
}

void loadBook(){        //加载图书信息
     FILE *fin;
    fin = fopen("book.txt","r+");
    k = 0;
    while(fscanf(fin,"%d %s %d",&book[k].number,book[k].bookName,&book[k].num)!=EOF){
        k++;
    }
    MAX_BOOK = k;
    fclose(fin);
}

void writeBor(){        //将借书信息写入文件
    FILE *fp;
    fp = fopen("borrow.txt","w");
    for(j = 0; j < MAX_BOR; j ++){
        fprintf(fp,"%s	%d	",bor[j].name,bor[j].num);
        for(k = 0; k < bor[j].num; k ++){
            fprintf(fp,"%d	%s	",bor[j].number[k],bor[j].book[k]);
        }
        fprintf(fp,"
");
    }
    fclose(fp);
}

void writeBook(){       //将图书信息写入文件
    FILE *fp;
    fp = fopen("book.txt","w");
    for(j = 0; j < MAX_BOOK; j ++){
        fprintf(fp,"%d	%s	%d
",book[j].number,book[j].bookName,book[j].num);
    }
    fclose(fp);
}

void printFun(){        //显示界面
    system("cls");
    printf(" _______________________________________________ 
");
    printf("|		欢迎进入图书管理系统！		|
");
    printf("|	<1>还书		");
    printf("<2>借书			|
");
    printf("|						|
");
    printf("|	<3>查询图书	");
    printf("<4>删除图书		|
");
    printf("|						|
");
    printf("|	<5>添加图书	");
    printf("<6>修改图书		|
");
    printf("|						|
");
    printf("|	<7>显示图书	");
    printf("<8>刷新			|
");
    printf("|						|
");
    printf("|	<9>退出					|
"); //退出
    printf("|_______________________________________________|

");
}

void move(){            //还书功能
    system("cls");
    print();
    int m;
    loadBor();
    for(m = 0; m < MAX_BOR; m ++){
        if(!strcmp(stu[cnt].name,bor[m].name)){
            break;
        }
    }
    if(m== MAX_BOR || bor[m].num == 0){
        printf("你当前的借书量为0，不需要还书
按任意键继续...");
        getchar();
        getchar();
        return;
    }
    printf("请输入还书的书号：");
    int num;
    char s[MAX];
    scanf("%d",&num);
    for(j = 0; j < bor[m].num; j ++){
        if(num == bor[m].number[j]){
            strcpy(s,bor[m].book[j]);
            break;
        }
    }
    if(j != bor[m].num){
        for(; j < bor[m].num-1; j ++){
            bor[m].number[j] = bor[m].number[j+1];
            strcpy(bor[m].book[j],bor[m].book[j+1]);
        }
        bor[m].num--;
        writeBor();
        loadBook();
        for(k = 0; k < MAX_BOOK; k ++){
            if(num == book[k].number){
                book[k].num++;
                break;
            }
        }
        if(k == MAX_BOOK){
            book[k].number = num;
            strcpy(book[k].bookName,s);
            book[k].num = 1;
            MAX_BOOK++;
        }
        writeBook();
    }else{
        printf("请输入正确的书号！
");
        getchar();
        getchar();
        move();
        return;
    }

}

void take(){    //借书功能
    loadBook();
    system("cls");
    printf("请输入要借的书的书号：");
    int num;
    scanf("%d",&num);
    int m;
    for(m = 0; m < MAX_BOOK; m ++){
        if(num == book[m].number){
            break;
        }
    }
    if(m == MAX_BOOK){
        printf("你输入的书号有误。。。。
");
        getchar();
        return;
    }
    if(book[m].num != 0){
        printf("书号：%d	书名：“%s”借书成功！！！
",book[m].number,book[m].bookName);
        book[m].num--;
        writeBook();
        for(j = 0; j < MAX_BOR; j ++){
            if(!strcmp(stu[cnt].name,bor[j].name))break;
        }
        if(j == MAX_BOR){
            strcpy(bor[j].name,stu[cnt].name);
            bor[j].num = 0;
            MAX_BOR++;
        }
        bor[j].number[bor[j].num] = num;
        strcpy(bor[j].book[bor[j].num],book[m].bookName);
        bor[j].num++;
        writeBor();
    }else{
        printf("你想借的“%s”已经被借完了！！！",book[m].bookName);
    }
    getchar();
}

void check(){   //查询图书
    loadBook();
    system("cls");
    int choice;
    printf(" ___________________________________________ 
");
    printf("|		查询图书		    |
");
    printf("|					    |
");
    printf("|					    |
");
    printf("|	书号【1】	书名【2】	    |
");
    printf("|					    |
");
    printf("|					    |
");
    printf("|___________________________________________|
");
    printf("
请输入(0退出)：");
    scanf("%d",&choice);
    if(choice == 1){
        int num;
        printf("请输入书号：");
        scanf("%d",&num);
        for(j = 0; j < MAX_BOOK; j ++){
            if(num == book[j].number)break;
        }
        if(j == MAX_BOOK){
            printf("书号为%d的图书不存在！！！",num);
        }else{
            printf("
书号为%d的信息如下:
",num);
            printf("
	图书名字为：%s

	储存数量为:%d

",book[j].bookName,book[j].num);
        }
    }else if(choice == 2){
        char s[MAX];
        printf("请输入书名：");
        scanf("%s",s);
        for(j = 0; j < MAX_BOOK; j ++){
            if(!strcmp(s,book[j].bookName))break;
        }
        if(j == MAX_BOOK){
            printf("书名为“%s”的图书不存在！！！",s);
        }else{
            printf("书名为“%s”的信息如下
",book[j].bookName);
            printf("	书号为：%d
	储存数量为:%d
",book[j].number,book[j].num);
        }
    }
    getchar();
}

void dele(){    //删除图书
    system("cls");
    printf(" ___________________________________________ 
");
    printf("|		删除图书		    |
");
    printf("|					    |
");
    printf("|					    |
");
    printf("|	书号【1】	书名【2】	    |
");
    printf("|					    |
");
    printf("|					    |
");
    printf("|___________________________________________|
");
    printf("请输入(0退出)：");
    int chioce;
    scanf("%d",&chioce);
    loadBook();
    if(chioce == 1){
        printf("请输入书号：");
        int num;
        scanf("%d",&num);
        for(j = 0; j < MAX_BOOK; j ++){
            if(num == book[j].number)break;
        }
        if(j == MAX_BOOK){
            printf("你输入的书号有误！！！");
        }else{
            printf("书号为：%d  书名为“%s”的图书成功删除！！！",book[j].number,book[j].bookName);
            for(;j < MAX_BOOK-1; j ++){
                book[j].num = book[j+1].num;
                strcpy(book[j].bookName,book[j+1].bookName);
                book[j].number = book[j+1].number;
            }
            MAX_BOOK--;
        }
    }else if(chioce == 2){
        printf("请输入书名：");
        char s[MAX];
        scanf("%s",s);
        for(j = 0; j < MAX_BOOK; j ++){
            if(!strcmp(s,book[j].bookName))break;
        }
        if(j == MAX_BOOK){
            printf("你输入的书名有误！！！");
        }else{
            printf("书号为：%d  书名为“%s”的图书成功删除！！！",book[j].number,book[j].bookName);
            for(;j < MAX_BOOK-1; j ++){
                book[j].num = book[j+1].num;
                strcpy(book[j].bookName,book[j+1].bookName);
                book[j].number = book[j].number;
            }
            MAX_BOOK--;
        }
    }
    writeBook();
    getchar();
}

void add(){     //添加图书
    system("cls");
    loadBook();
    int num, numb;
    char s[MAX];
    printf("请输入书号：");
    scanf("%d",&numb);
    for(j = 0; j < MAX_BOOK; j ++){
        if(numb == book[j].number){
            printf("抱歉！您输入的书号已经存在！！！
按任意键重新输入...");
            getchar();
            getchar();
            add();
            return;
        }
    }
    printf("请输入是名：");
    scanf("%s",s);
    for(j = 0; j < MAX_BOOK; j ++){
        if(!strcmp(s,book[j].bookName)){
            printf("抱歉！您输入的书名已经存在！！！
按任意键重新输入...");
            getchar();
            getchar();
            add();
            return;
        }
    }
    printf("请输入书的数量：");
    scanf("%d",&num);
    book[MAX_BOOK].num = num;
    book[MAX_BOOK].number = numb;
    strcpy(book[MAX_BOOK].bookName,s);
    MAX_BOOK++;
    writeBook();
    printf("书号为：%d	书名为：%s	数量为：%d 添加成功！！！",numb,s,num);
    getchar();
}

void modify(){      //修改图书
    loadBook();
    system("cls");
    int num, numb;
    char s[MAX];
    printf("请输入要修改图书的书号：");
    scanf("%d",&num);
    for(j = 0; j < MAX_BOOK; j ++){
        if(num == book[j].number)break;
    }
    if(j == MAX_BOOK){
        printf("您输入的书号不存在！！！
任意键继续...");
        getchar();
        return;
    }
    printf("
书号为：%d	书名为：%s	数量为：%d
",book[j].number,book[j].bookName,book[j].num);
    printf("
请输入你要修改后的“书号”、“书名”和“数量”
输入【0】退出
");
    int flag3 = 0;
    while(1){
        printf("
【1】书号：");
        scanf("%d",&numb);
        if(numb == 0)return;
        int m;
        for(m = 0; m < MAX_BOOK; m ++){
            if(numb == book[m].number){
                flag3 = 1;
                break;
            }
        }
        if(flag3)printf("
该书号已经存在了，请换一个！！！
");
        else break;
    }
    flag3 = 0;
    while(1){
        printf("
【2】书名：");
        scanf("%s",s);
        if(!strcmp("0",s))return;
        int m;
        for(m = 0; m < MAX_BOOK; m ++){
            if(!strcmp(s,book[m].bookName)){
                flag3 = 1;
                break;
            }
        }
        if(flag3)printf("
该书名已经存在了，请换一个！！！
");
        else break;
    }
    printf("
【3】数量：");
    scanf("%d",&num);
    book[j].num = num;
    book[j].number = numb;
    strcpy(book[j].bookName,s);
    printf("
修改成功！！！");
    writeBook();
    getchar();
}

void show(){        //显示图书（分屏）
    loadBook();
    FILE *fp;
    fp = fopen("book.txt","r+");
    int l = 0;
    while(fscanf(fp,"%d %s %d",&book[l].number,book[l].bookName,&book[l].num)!=EOF){
        l++;
    }
    int con;
    if(l != 0) printf("书号		书名		数量
");
    for(j = 0; j < l; j ++){
        if(j%10 == 0 && j != 0){
            printf("退出【1】	下一页【2】
请输入：");
            scanf("%d",&con);
            if(con == 1){
                break;
            }else continue;
        }
        printf("%d		%s		%d
",book[j].number,book[j].bookName,book[j].num);
    }
    fclose(fp);
    getchar();
}


//Starry
int main()
{
    int choice, flag1 = 0;
    do{
        system("color A");
        printf(" _______________________________________________ 
");
        printf("|		欢迎进入图书管理系统！		|
");
        printf("|						|
");
        printf("|						|
");
        printf("|						|
");
        printf("|	注册【1】		登入【2】	|
");
        printf("|						|
");
        printf("|						|
");
        printf("|_______________________________________________|

");
        if(flag1)printf("		请重新输入：");
        else printf("		请输入：");
        scanf("%d",&choice);
        if(choice == 1){
            regist();
        }else if(choice == 2){
            login();
            if(!flag){
                printf("你已经输入超过三次了！！！");
                exit(0);
            }
        }
        flag1 = 1;
        if(flag)break;
        system("cls");
    }while(1);
    loadBor();
    system("cls");
    printf(" _______________________________________________ 
");
    printf("|		欢迎进入图书管理系统！		|
");
    printf("|						|
");
    printf("|						|
");
    printf("|	欢迎用户:	%s			|
",stu[cnt].name);
    printf("|	当前借书信息是：			|
");
    print();
    printf("按任意键继续...");
    getchar();
    int flag2 = 1;
    while(1){
        getchar();
        //Sleep(5000);
        system("cls");
        printFun();
        if(flag2)printf("请选择：");
        else printf("请从1-9中进行选择:"); /*再从1-13中进行选择*/
        scanf("%d",&choice);
        if(choice<1||choice>9){
            flag2 = 0;
            continue;
        }else flag2 = 1;
        switch(choice){
            case 1: move();     //还书
                    break;
            case 2: take();     //借书
                    break;
            case 3: check();    //查询图书
                    break;
            case 4: dele();     //删除图书
                    break;
            case 5: add();      //添加图书
                    break;
            case 6: modify();   //修改图书
                    break;
            case 7: show();     //显示图书
                    break;
            case 8: printFun(); //刷新界面
                    break;
            case 9: exit(1);    //退出
                    break;
            default : break;
        }
        printf("按任意键继续...");
    }
    return 0;
}