查找.cpp

图书馆管理系统 查找

#include "stdafx.h"
#include"harRange.h"
#include"BookData.h"
void BookInfo(BookData &obj);
void lookUpBook()
{
	BookData obj;
	fstream file;
	string bookname,name; //定义书名和确认是否还要输入其他书的信息变量,name用来将文件里的bookTitle转换成string类型

	file.open("shendan.dat",ios::in|ios::binary);

	file.clear();
	if(file.fail())
	{
		cout<<"打开文件失败!";
		exit(0);
	}
	cout<<"\t\t\t---------------------------\n";
	cout<<"\t\t\t请输入书名:";
	cin>>bookname;
	file.seekg(0,ios::beg);
	file.read((char *)&obj,sizeof(obj));
	name.assign (obj.getTitle() );
	while(bookname !=name && !file.eof())
	{
		file.read((char *)&obj,sizeof(obj));
		name.assign (obj.getTitle());
	}
	if(bookname!=name)
	{
		cout<<"\t\t\t本书库没有该书!\n";
	}
	else
	{
		BookInfo(obj);
	}
	file.close();

}