创建一个包含多个结构体的容器

可以使用 C++ 中的 STL 容器来存储多个结构体。其中，常用的有 vector、array 和 list 等。以 vector 为例，假设有以下两个结构体：

struct Person {
    string name;
    int age;
};

struct Book {
    string title;
    string author;
    double price;
};

我们可以创建一个 vector 容器，用来存储多个 Person 和 Book 结构体：

vector<Person> people;
vector<Book> books;

然后，我们可以向容器中添加元素，例如：

Person p1 = {"Alice", 25};
Person p2 = {"Bob", 30};
people.push_back(p1);
people.push_back(p2);

Book b1 = {"The Catcher in the Rye", "J.D. Salinger", 9.99};
Book b2 = {"To Kill a Mockingbird", "Harper Lee", 8.99};
books.push_back(b1);
books.push_back(b2);

我们也可以通过迭代器遍历容器中的元素：

for (auto it = people.begin(); it != people.end(); ++it) {
    cout << it->name << ", " << it->age << endl;
}

for (auto it = books.begin(); it != books.end(); ++it) {
    cout << it->title << ", " << it->author << ", " << it->price << endl;
}