C++实现的图书管理系统程序与查找功能

#include<stdio.h> 
#include<string.h> 
#include<conio.h> 
#include<stdlib.h> 
#define N 1000
struct book /*定义书的类型*/ 
{   int booknum; 
    char bookname[10]; 
    char bookcreat[10]; 
    int type;     /*图书类别编号*/  
}book[N],Book1[N],Book2[N],Book4;
void addbook() 
{ FILE *fp; 
    int i=0; 
    char choice='y'; 
    fp=fopen("book.txt","a+"); 
    while(choice=='y'||choice=='Y') 
    { printf("请你输入第%d本书的序号\n",i+1); 
scanf("%d",&book[i].booknum); 
printf("请你输入书名\n"); 
scanf("%s",book[i].bookname); 
printf("请你输入书的作者\n"); 
scanf("%s",book[i].bookcreat); 
printf("请输入图书类别编号\n");
scanf("%d",&book[i].type); getchar();
fwrite(&book[i],sizeof(struct book),1,fp); 
printf("是否要输入下本书<y/n>\n"); 
scanf("%c",&choice); 
i++;
    } 

fclose(fp); 
}
void findbook()
{ 
    FILE *fp; 
    char bookname[10]; 
    int i; 
    fp=fopen("book.txt","r"); 
    printf("请输入你要查找的书名\n"); 
    scanf("%s",bookname); 
    for(i=0;fread(&book[i],sizeof(struct book),1,fp)!=0;i++) 
{ 
if(strcmp(bookname,book[i].bookname)==0) 
{
printf("书的作者：%s\n",book[i].bookcreat);
} 
} 
for(i=0;fread(&book[i],sizeof(struct book),1,fp)!=0;i++) 
{
if(strcmp(bookname,book[i].bookname)!=0) 
{
printf("没有你要查询的书籍\n");
}
}
   fclose(fp);  
}

findbook1()
{ 
   FILE *fp;