Найти число!!!

#include <iostream.h>
#include <stdio.h>
 
typedef struct{
double shifr_books;
char avtor[100];
char nazvanie[100];
int god_izdaniya;
int number;
}Library;
 
 
void main(){
int N;
FILE*FP=fopen("Library.dat","wb");
 
Library X;
cout<<"VVedite kolichestvo knig:  \n";
cin>>N;
 
for (int i=0; i<N; i++){
cout<<"\nVvedite shifr knigi: ";
cin>>X.shifr_books;
cout<<"\nVvedite avtora knigi: ";
cin>>X.avtor;
cout<<"\nVvedite nazvanie knigi: ";
cin>>X.nazvanie;
cout<<"\nVvedite god izdaniya knigi: ";
cin>>X.god_izdaniya;
cout<<"\nVvedite nomer stellaga,gde nahoditsya kniga: ";
cin>>X.number;
 
 
fwrite(&X,sizeof(X),1,FP);
}
fclose(FP);
 
}

#include <iostream.h>
#include <stdio.h>
#include <string.h>
 
typedef struct{
double shifr_books;
char avtor[100];
char nazvanie[100];
int god_izdaniya;
int number;
}Library;
 
void main(){
Library X;
FILE*FP=fopen("Library.dat","rb");
int z=0;
int god_izdaniya;
 
 
cout<<"\nVvedite god_izdaniya: ";
cin>>god_izdaniya;
 
 
 
while(!feof(FP)){
fread(&X,sizeof(X),1,FP);
 
    
if (X.god_izdaniya==god_izdaniya) 
z++;
 
{
    cout<<"\nChislo knig iz kollekcii: "<<z<<endl;  
 
}
 
 
}
fclose(FP);
 
}