C语言实现图书管理系统
代码如下：
# include "stdio.h" # include "stdlib.h"# include "string.h" # define size 100 typedef struct {long booknumber; char bookname[15]; char auther[20];char press[20]; float price;int nownum;}book;typedef struct{long cardnumber;char name[20];char sex[10];long tel;char clas[20];char condition[20];}Member; void Bookfound(); void Bookdel(); void Bookadd();void Booklook(); void Booksearch(); void Memberadd(); void Memberchange(); void Bookborrow(); void Bookreturn();//***********************************************//int login(char password[]) { static char key[10]="123"; if(strcmp(password,key)==0) return 1; else return 0;}void main(){int choice; do{printf("|==========================================|\n");printf("| 欢迎使用图书管理系统 |\n");printf("|******************************************|\n");printf("|图书管理|\n");printf("|==========================================|\n");printf("|1,创建图书信息|\n");printf("|2,删除图书|\n");printf("|3,增添图书|\n");printf("|4,按名称查询图书|\n");printf("|5,按作者查询图书|\n");printf("|6,创建读者信息|\n");printf("|7,修改读者信息|\n");printf("|==========================================|\n");printf("| 借书和还书管理 |\n");printf("|******************************************|\n");printf("|8,借书|\n");printf("|9,还书|\n");printf("|0,退出系统|\n");printf("============================================\n");printf("\n您好！请输您的选择(1,2,3,4,5,6,7,8,9,0):\n"); scanf("%d",&choice);switch(choice){ case 1:Bookfound();break; case 2:Bookdel();break; case 3:Bookadd();break; case 4:Booklook();break; case 5:Booksearch();break;case 6: Memberadd();break; case 7: Memberchange();break; case 8:Bookborrow();break; case 9:Bookreturn();break; case 0:exit(0);break; }}while(1);}//************************1输入图书信息***********************//void Bookfound(){FILE *fp=NULL; book a; char filename[20]=""; int h=1; printf("\n为了存储图书信息请输入一个文件名.\n");scanf("%s",filename);if((fp=fopen(filename,"wb+"))==NULL){printf("\ncan not open this file");return;}printf("请输入书的信息\n");printf("如过你输入的书号为0则表示输入结束了\n");while(h<=size){printf("请输入书号:\n");scanf("%ld",&a.booknumber);if(a.booknumber==0)break;printf("请输入书名:\n");scanf("%s",a.bookname);printf("请输入作者:\n");scanf("%s",a.auther);printf("请输入出版社:\n");scanf("%s",a.press );printf("请输入价格:\n");scanf("%f",&a.price );printf("请输入当前的数量:\n");scanf("%d",&a.nownum);printf("==================================\n");if(fwrite(&a,sizeof(book),1,fp)!=1){printf("write file %s fail",filename);return;}h++;}fclose(fp);printf("你输入书的信息已经成功存储在文件里了\n");printf("输入文件的内容如下:\n");if((fp=fopen(filename,"rb+"))==NULL){printf("can not open the file.\n");return;}printf("\n书号\t书名\t作者\t出版社\t价格\t数量\n"); while(fread(&a,sizeof(book),1,fp)!=0){printf("\n%ld\t%s\t%s\t%s\t%f\t%d\n",a.booknumber,a.bookname,a.auther,a.press,a.price ,a.nownum );}fclose(fp);}//************************删除图书信息***********************//void Bookdel(){int i;long No;book a;book s[size];int R;char filename[30];FILE *fp;printf("\n请输入存放书的文件名.\n");scanf("%s",filename);if((fp=fopen(filename,"rb"))==NULL){printf("\ncan not open this file");return;}printf("请输入你要删除的书号:\n");scanf("%ld",&No);printf("你要删除的书号为:%ld\n",No);R=0;while(fread(&a,sizeof(book),1,fp)!=0){if(a.booknumber!=No){s[R].booknumber=a.booknumber;strcpy(s[R].bookname,a.bookname);strcpy(s[R].auther,a.auther);strcpy(s[R].press,a.press);s[R].price =a.price;s[R].nownum =a.nownum ;R++;}}fclose(fp);if((fp=fopen(filename,"wb+"))==NULL){printf("\ncan not open this file");return;}for(i=0;i<R;i++){if(fwrite(&s[i],sizeof(book),1,fp)!=1){printf("write file %s fail",filename);return;}}fclose(fp);if((fp=fopen(filename,"rb"))==NULL){printf("\ncan not open this file");return;}printf("删除以后文件里的内容如下:\n");printf("\n书号r\t书名\t作者\t出版社\t价格\t数量\n");while(fread(&a,sizeof(book),1,fp)!=0){if(a.booknumber!=0)printf("\n%ld\t%s\t%s\t%s\t%f\t%d\n",a.booknumber,a.bookname,a.auther,a.press,a.price,a.nownum);}fclose(fp); }//************************增加图书信息***********************// void Bookadd(){FILE *fp=NULL; book a; char filename[30]; int h=1; printf("\n请输入存放书的文件名.\n");scanf("%s",filename);if((fp=fopen(filename,"a+"))==NULL){printf("\ncan not open this file");return;}printf("请输入你要添加的书的信息\n");printf("如果你输入的书号为0，这表示输入结束\n");while(h<=size){printf("请输入书号\n");scanf("%ld",&a.booknumber);if(a.booknumber==0)break;printf("请输入书名:\n");scanf("%s",a.bookname);printf("请输入作者:\n");scanf("%s",a.auther);printf("请输入出版社:\n");scanf("%s",a.press);printf("请输入价格\n");scanf("%f",&a.price);printf("请输入当前的数量:\n");scanf("%d",&a.nownum);printf("==================================\n");if(fwrite(&a,sizeof(book),1,fp)!=1){printf("write file %s fail",filename);return;}h++;}if(h>size)printf("\n对不起，您的输入超量了");fclose(fp);printf("您输入的内容成功存储在文件中\n");printf("内容如下:\n");if((fp=fopen(filename,"rb"))==NULL){printf("cannot open the file\n");return;}printf("\n书号\t书名\t作者\t出版社\t价格\t数量\n"); while(fread(&a,sizeof(book),1,fp)!=0){printf("\n%ld\t%s\t%s\t%s\t%f\t%d\n",a.booknumber,a.bookname,a.auther,a.press ,a.price,a.nownum );}fclose(fp);}//***********************按书名查询图书信息************************//void Booklook(){ FILE *fp;book a;char shum[20];int result=0;char filename[20];printf("请输入您要查询的书名:\n");scanf("%s",shum);result=0;printf("\n请输入存储书的文件名.\n");scanf("%s",filename);if((fp=fopen(filename,"rb"))==NULL){printf("\ncannot open this file.");return;}while(feof(fp)==0) {{if(fread(&a,sizeof(book),1,fp)!=0)if(strcmp(shum,a.bookname)==0){printf(":\n您要查找的图书信息如下:\n");printf("书名:%s\n",a.bookname);printf("书号:%ld\n",a.booknumber);printf("价格:%f\n",a.price);printf("作者:%s\n",a.auther);printf("出版社:%s\n",a.press);printf("当前数量:%d\n",a.nownum);result=1;}}}fclose(fp);if(result==0){printf("对不起没有你要找的书");}}//***********************按作者查询图书信息************************//void Booksearch(){ FILE *fp;book a;char zuoz[20];int result=0;char filename[20];printf("请输入您要查询图书的作者:\n");scanf("%s",zuoz);result=0;printf("\n请输入存储书的文件名.\n");scanf("%s",filename);if((fp=fopen(filename,"rb"))==NULL){printf("\ncannot open this file.");return;}while(feof(fp)==0) {{if(fread(&a,sizeof(book),1,fp)!=0)if(strcmp(zuoz,a.bookname)==0){printf(":\nnin要查找的图书信息如下:\n");printf("书名:%s\n",a.bookname);printf("书号:%ld\n",a.booknumber);printf("价格:%f\n",a.price);printf("作者:%s\n",a.auther);printf("出版社:%s\n",a.press);printf("当前数量:%d\n",a.nownum);result=1;}}}fclose(fp);if(result==0){printf("对不起没有你要找的书");}}//************************创建读者信息************************//void Memberadd(){FILE *fp=NULL; Member a; char Datafile[30]=""; int count=1; printf("\n请输入存储读者的文件名\n"); scanf("%s",Datafile); if((fp=fopen(Datafile,"a+"))==NULL){printf("\ncan not open this file");return;} printf("请输入读者的信息\n");printf("\n如果输入的卡号为0表示输入结束\n"); while(count<=size){ printf("请输入卡号:\n");scanf("%ld",&a.cardnumber);if(a.cardnumber==0)break;printf("请输入名字:\n");scanf("%s",a.name); printf("请输入性别:\n");scanf("%s",a.sex);printf("请输入手机号码:\n");scanf("%ld",&a.tel); printf("请输入班级:\n");scanf("%s",a.clas);printf("请输入借书状态:\n");scanf("%s",a.condition );printf("----------------------------------\n");if(fwrite(&a,sizeof(Member),1,fp)!=1){printf("write file %s fail",Datafile);return;}count++;}if(count>size)printf("\n对不起，您输入的读者数量超量\n");fclose(fp);printf("您增添的读者信息已经成功存储在会员文件中\n");printf("增添后的内容如下:\n");if((fp=fopen(Datafile,"rb"))==NULL){printf("cannot open the file\n");return;}printf("\n卡号\t姓名\t性别\t手机号码\t班级\t借书状态\n"); while(fread(&a,sizeof(Member),1,fp)!=0){printf("\n%ld\t%s\t%s\t%ld\t%s\t%s\n",a.cardnumber,a.name,a.sex,a.tel,a.clas,a.condition);}fclose(fp);}//************************读者信息修改*****************************//void Memberchange(){ FILE *fp;long num;long cardnumber;char name[20];char sex[10];long tel;char clas[20];char condition[20];Member a;Member s[size];int R,i;char filename[30];printf("\n请输入存储读者的文件名\n");scanf("%s",filename);if((fp=fopen(filename,"rb"))==NULL){printf("\nopen file %s fail",filename);return;}printf("请输入你要修改的读者的卡号:\n");scanf("%ld",&num);cardnumber=num;printf("请输入名字:\n");scanf("%s",name);printf("请输入性别:\n");scanf("%s",sex );printf("请输入现在的手机号码:\n");scanf("%ld",&tel);printf("请输入现在的班级:\n");scanf("%s",clas);printf("请输入借书状态:\n");scanf("%s",condition);R=0;while(fread(&a,sizeof(Member),1,fp)!=0){if(a.cardnumber!=num){s[R].cardnumber=a.cardnumber;strcpy(s[R].name,a.name); strcpy(s[R].sex,a.sex);strcpy(s[R].clas,a.clas);strcpy(s[R].condition,a.condition);s[R].tel=a.tel;R++;}else{s[R].cardnumber=cardnumber;strcpy(s[R].name,name); strcpy(s[R].sex,sex);strcpy(s[R].clas,clas);strcpy(s[R].condition,a.condition);s[R].tel=tel;R++;} } fclose(fp); if((fp=fopen(filename,"wb+"))==NULL) { printf("cannot open the file\n"); return; } for(i=0;i<R;i++) { if(fwrite(&s[i],sizeof(Member),1,fp)!=1) { printf("\nopen the file %s fail",filename); return; } } fclose(fp); printf("你修改读者内容信息已经成功存储在文件中\n"); printf("修改后的内容如下:\n"); if((fp=fopen(filename,"rb"))==NULL) { printf("can not open the file\n"); return; } printf("\n卡号\t姓名\t性别\t手机号码\t班级\t借书状态\n");while(fread(&a,sizeof(Member),1,fp)!=0) { if(a.cardnumber!=0) printf("\n%ld\t%s\t%s\t%ld\t%s\t%s\n",a.cardnumber,a.name,a.sex,a.tel,a.clas,a.condition); } fclose(fp);}//***********************借书***********************//void Bookborrow(){FILE *fp;book a;Member b;int mflag=0,flag=0;char bookname[20],membername[20];char filename[20];printf("请输入名字:\n");scanf("%s",membername);printf("\n请输入存储读者的文件名:");scanf("%s",filename);if((fp=fopen(filename,"rb"))==NULL){printf("cannot open the file\n");return;}while(feof(fp)==0){if(fread(&b,sizeof(Member),1,fp)!=0){if(strcmp(membername,b.name)==0){mflag=1;break;}}}fclose(fp);if(mflag==1){printf("你可以借书\n");printf("请输入你要借的书名:\n");scanf("%s",bookname);printf("请输入存储图书的文件名:\n");scanf("%s",filename);if((fp=fopen(filename,"rb"))==NULL){printf("cannot open file\n");return;}while(feof(fp)==0){if(fread(&a,sizeof(book),1,fp)!=0){if(strcmp(bookname,a.bookname)==0){printf("这本书存在\n");printf("恭喜你你借书成功了\n");flag=1;}}}if(flag==0){printf("对不起，这本书被别人借走了\n");printf("借书失败了\n");}if(flag==1){ printf("请修该图书和读者信息，把该书的信息添加到图书信息文件中，把读者的状态改为已借书状态\n"); printf("请去选择相应的功能进行修改\n");}fclose(fp);}}//************************还书************************//void Bookreturn(){FILE *fp;book a;Member b;int mflag=0,flag=0;char bookname[20],membername[20];char filename[20];printf("请输入名字:\n");scanf("%s",membername);printf("\n请输入存储的文件名:");scanf("%s",filename);if((fp=fopen(filename,"rb"))==NULL){printf("cannot open the file\n");return;}while(feof(fp)==0){if(fread(&b,sizeof(Member),1,fp)!=0){if(strcmp(membername,b.name)==0){mflag=1;break;}}}if(mflag==0){printf("别忽悠人!你不是读者,你不可以还书!\n");}if(mflag==1){printf("您可以还书!\n");fclose(fp);printf("请输入要还的书名:\n");scanf("%s",bookname);printf("请输入存储图书的文件名:\n");scanf("%s",filename);if((fp=fopen(filename,"rb"))==NULL){printf("cannot open file\n");return;}while(feof(fp)==0){if(fread(&a,sizeof(book),1,fp)!=0){if(strcmp(bookname,a.bookname)==0){printf("恭喜您,还书成功!\n");flag=1;}}}if(flag==0){printf("对不起，您还错了。这本书不是我们图书馆的!\n");printf("对不起,还书失败\n");flag=0;}if(flag==1){printf("请修该图书和读者信息，把该书的信息添加到图书信息文件中，把读者的状态改为已换书状态\n");printf("请选择相应的功能进行修改\n");}fclose(fp);}}运行效果图
