请各位大神看下，为什么这段代码没有调用构造函数？

#include<iostream>
#include<string>
using namespace std;
class Publication {
protected:
    string title;
    string name;
    float price;
    string date;
public:
    Publication() {};
    int inputData() { 
        cout << "Please input title,name,price and date:\n" << endl;
        cin >> title >> name >> price >> date; 
        return 0; 
    };
    void display() { cout << "Title:" << title <<'\t'<< "Name:" << name <<'\t'<< "Price:" << price <<'\t'<< "Date:" << date << endl; }
    ~Publication() { cout << "destructor...Publication" << endl; }
};
class Book :virtual public Publication {
public:
    ~Book() { cout << "destructor...Book i="<< endl; };
    int page() {};
};
class CD :virtual public Publication {
public:
    CD() {};
    ~CD() { cout << "destructor...CD" << endl; };
    int playtime() {};
};
int main() {
    Book b;
    b.inputData();
    b.display();
    system("pause");
}

析构函数是调用的，你下断点调试就知道
但是main函数先运行完，控制台先被销毁，所以输出不到屏幕上