C++. datafile containing objects?

please tell me whats wrong with the program.


i want to write a program to create datafile containing objects using datafile handling








class student


{


int idno;


int clas;


int rno;


char name[25];


public:


void entry ()


{


cout%26lt;%26lt;"IDNO:";


cin%26gt;%26gt;idno;


cin%26gt;%26gt;clas;


cin%26gt;%26gt;rno;


gets(name);


}





void display()


{


cout%26lt;%26lt;" id number"%26lt;%26lt;idno;


}





void objs();


void readobj();


}obj;








void student:: objs(void)


{


fstream fout ( "student.dat" , ios::app|ios::binary);


student stud;


stud. entry();


fout.write((char *)%26amp;stud, sizeof(student));


fout.close();


}





void student :: readobj()


{


ifstream fin;


fin.open("student.dat");


while(fin)


{


fin.read((char*)%26amp;obj, sizeof(student));


cout%26lt;%26lt;obj.idno;


}


fin.close();


};





void main()


{


clrscr();


objs();


readobj();


}

C++. datafile containing objects?
what is the error that ur compiler shows??