Создать структуру, содержащую сведения о библиотеке

#include <iostream>
#include <string>
 
struct bibl {
 
    std::string name;
    int number;
    std::string author;
    std::string publ;
    int volume;
    int cost;
 
    void show()
    {
        std::cout << "\n\nName: " << name;
        std::cout << "\nNumber: " << number;
        std::cout << "\nAuthor: " << author;
        std::cout << "\nPublishment: " << publ;
        std::cout << "\nVolume: " << volume;
        std::cout << "\nCost: " << cost;
    }
};
 
int main()
{
    bibl bibloteka[4] = {   { "C++ for 21 centuries", 0, "B. Stroustrup", "Single manuscript", 9000, 1000000000 },
                            { "Horses walk like G", 199888, "Jeremy Clarkson", "Times New Roman", 351, 400 },
                            { "How to become a millionare", 48966, "Abram Katz", "Mossad publishment", 3, 1000000 },
                            { "The elephant and the balloon", 9854412, "Bernard Black & Manny Bianco", "Times New Roman", 12, 1 } };
 
    //1)
    std::string str;
    int count = 0;
    std::getline(std::cin, str);
 
    for(int i=0; i<4; i++) if( str == bibloteka[i].author ) count++;
    std::cout << "1) " << count;
 
    //2)
    std::cout << "\n\n2) ";
    for(int i=0; i<4; i++) if( bibloteka[i].cost > 300 ) bibloteka[i].show();
 
    system("pause");
    return 0;
}