gdfsgdfgdg

#include <string>
#include <iostream>
#include <fstream>

using namespace std;

struct book {
    int isbn;
    char namebook[20];
    char author[30];
    unsigned int year_of_publication;
};
void createBinFile(string nametf,string namebf) {
    ifstream itf(nametf);
    if (!itf) return;
    fstream bf(namebf, ios::binary | ios::out);
    book b;
    while (!itf.eof()) {
        itf >> b.isbn;
        itf.get();
        itf.getline(b.namebook, 20);
        itf.getline(b.author, 30);
        itf >> b.year_of_publication;
        bf.write((char*)&b, sizeof(book));
    }
    itf.close();
    bf.close();

}
void outBinFile(string namebf) {
    fstream bf(namebf, ios::binary | ios::in);
    if (!bf) return;
    book b;
    int len = sizeof(book);
    bf.read((char*)&b, len);
    while (!bf.eof()) {
        cout << b.isbn << ' ' << b.namebook << ' '<<b.author<<endl;
        bf.read((char*)&b, len);
    }
    bf.close();
}
int main()
{

    createBinFile("in.txt","test.bin");
    outBinFile("test.bin");


}