#include <iostream>
#include <stdio.h>
#include <conio.h>

using namespace std;
class SINHVIEN
{
private:
 int mssv;
 int namsinh;
public:
 SINHVIEN()
 {
  mssv = 1;
  namsinh = 1990;
 }
 SINHVIEN(int a, int b)
 {
  mssv = a;
  namsinh = b;
 }
 void Xuat()
 {
  cout<<mssv<<" / "<<namsinh;
 }
};
void Write(SINHVIEN A)
{
 FILE *f;
 f = fopen("D:\\SV.a","wb");
 if(f == NULL)
 {
  cout<<"\nLoi!";
 }
 else
 {
  fwrite(&A, sizeof(A),1,f);
  fclose(f);
  cout<<"\nGhi Thanh Cong!";
 }
}
SINHVIEN Read()
{
 FILE *f;
 SINHVIEN A;
 f = fopen("D:\\SV.a","rb");
 if(f == NULL)
 {
  cout<<"\nLoi!";
 }
 else
 {
  fread(&A, sizeof(A),1,f);
  fclose(f);
  cout<<"\nDoc Thanh Cong!";
 }
 return A;
}
int main()
{
 SINHVIEN A(217,1999);
 A.Xuat();
 Write(A);
 _getch();
 SINHVIEN B = Read();
 B.Xuat();
 _getch();
 return 0;
}