大家傍晚好，c++ new 停止工作,该怎么处理

#include<iostream>
#include<fstream>
#include<vector>
#include<string>
using namespace std;
class Book
{
public:
    Book():ISBN('\0'),name('\0'),price(0){};
    void modify();
    void show();
    string ISBN;
    string name;
    float price;
};
void Book::modify()
{
    cin>>ISBN>>name>>price;
}
void Book::show()
{
    cout<<ISBN<<'\n'<<name<<'\n'<<price<<endl;
}
vector<Book>B;
int Load()
{
    ifstream in;
    int i=0;
    in.open("bookdatabase.txt");
    if (!in)
    {
    cerr <<"error: unable to open file"<< endl;
    exit(0);
    }
    while(!in.eof())
    {
        Book *temp=new Book;
        in.clear();
        in>>temp->ISBN>>temp->name>>temp->price;
        B.push_back(*temp);
        i++;
        delete temp;
    }
    return i;
}
int main()
{
    int i=0,j=0;
    i=Load();
    return 0;
}

class Book
{
public:
    Book():ISBN("\0"),name("\0"),price(0){};//注意双引号
    void modify();
    void show();
    string ISBN;
    string name;
    float price;
};