Найти Ошибку БД

#include <iostream>
#include <cmath>
#include <stdio.h>
#include <conio.h>
using namespace std;
 
struct sotrudnik
{ 
char lastname[50];
int birsday;
int year;
int children;
int oklad;
};
void main()
{
    struct sotrudnik str1, str2, str3, str4, str5;
    printf("Familia:");
    gets(str1.lastname);
 
    printf("Data rojdenia:");
    scanf("%d", 
    &str1.birsday);
 
    printf("god trudoustrojstva:");
    scanf("%d", &str1.year);
 
    printf("kolichestvo detey:");
    scanf("%d", &str1.children);
 
    printf("oklad:");
    scanf("%d", &str1.oklad);
 
    str2=str1;
    str3=str2;
    str4=str3;
    str5=str4;
 
    printf(" sotrudnik %s", str5.lastname);
    printf(" Data rojdenia%d", str5.birsday);
    printf(" god trudoustrojstva %d", str5.year);
    printf(" kolichestvo detey %d", str5.children);
    printf(" oklad %d", str5.oklad);
    system("pause");
}

#include <iostream>
#include <fstream>
#include <string>
 
struct Worker
{
  std::string surname;
  std::string birthday;
  unsigned int yearToWork;
  unsigned char countChild;
  unsigned int salary;
};
 
int main()
{   
    size_t SIZE;
    std::cout << "Input number of workers: "; std::cin >> SIZE;
    
    Worker worker[SIZE];
    
    for(int i = 0; i < SIZE; ++i)
    {
      std::cout << "Input surname: ";     std::cin >> worker[i].surname;
      std::cout << "Input birthday: ";    std::cin >> worker[i].birthday;
      std::cout << "Input yearToWork: ";  std::cin >> worker[i].yearToWork;
      std::cout << "Input scountChild: "; std::cin >> worker[i].countChild;
      std::cout << "Input salary: ";      std::cin >> worker[i].salary;
    }
    
    std::ofstream out("outfile.dat", std::ios::binary|std::ios::out);
    for(int i = 0; i < SIZE; ++i)
        out.write((char *)&worker[i], sizeof(worker)/SIZE);
    
    
    system("PAUSE");
    return 0;
}