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("\ncan  not 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("\ncan  not 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);
  }
}

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561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631

运行效果图