Работа с файлами в структурах

#include <iostream>
#include <windows.h>
#include <fstream>
using namespace std;
FILE *fin,*fout,*foutb,*frd;
struct Date
{
    int month;
    int day;
    int year;
};
 
struct BOOK
{
    char name[64];
    char avtor[64];
    int cina;
    void Show(); 
    void Input(); 
    void ShowOnly(int god);
    
 Date built;
 };
 
void BOOK::Input()
{
 
    fscanf(fin,"%s%s%d%d%d%d",&name,&avtor,&cina,&built.day,&built.month,&built.year);
}
void BOOK::Show()
{
 
    fprintf(fout,"%s%s%d%d%d%d",name,avtor,cina,built.day,built.month,built.year);
    fprintf(foutb,"%d%d%d%d%d%d%d",sizeof(name),sizeof(avtor),sizeof(cina),sizeof(built.day),sizeof(built.month),sizeof(built.year));
 
 
}
 
void BOOK::ShowOnly(int god) 
{
    if (built.year==god) Show(); 
};
 
 int main()
 {char nazv[64];
 fin=fopen("input.txt","r");
fout=fopen("output.txt","w");
foutb=fopen("output1.dat","wb");
fscanf(fin,"%s",&nazv);
fwrite(&nazv,sizeof(char),1,foutb);
ifstream fen("output1.dat",ios_base::in | ios_base::binary);
 fen.open("output1.dat",ios_base::in | ios_base::binary);
ofstream faut("outpit.txt",ios_base::out| ios_base::binary);
faut<<fen.rdbuf();
 int N;
 cout<<"Ââåäèòå êîëè÷åñòâî êíèã: ";
 cin>>N;
 cin.ignore();
 const int god=2017;
BOOK *SHOP=new BOOK[N];
for(int i=0;i<N;i++) SHOP[i].Input();
 
 for (int i=0;i<N-1;i++)
    {
        for (int j=1;j<N;j++)
        {
            if (strlen(SHOP[i].avtor)>strlen(SHOP[j].avtor)) swap(SHOP[i],SHOP[j]);
            
        }
    }
 
for (int i=0;i<N+1;i++) SHOP[i].Show();
fclose(fin);
fclose(fout);
fclose(foutb);
 
}