students

#include <iostream>
#include <clocale>
#include <fstream>
#define nmarks 5
#define nsessions 2

using namespace std;
struct Tstudent
{
    string name, lastname, surname, exam_name;
    unsigned int nkurs, ngroup, exam_mark;
    int marks[nsessions][nmarks];
    bool study_form;
};

Tstudent* Read_from_file(ifstream &f)
{
    Tstudent* temp = new Tstudent;
    string s;
    getline(f,temp->lastname);
    if(f.eof())
    {
        delete temp;
        return NULL;
    }
    getline(f,temp->name);
    getline(f,temp->surname);
    f >> temp->nkurs;
    f >> temp->ngroup;
    for ( int i=0; i<nsessions;i++)
        for(int j=0; j<nmarks; j++)
            f >> temp->marks[i][j];
    f >> temp->study_form;
    getline(f, s);
    getline(f,temp->exam_name);
    f >> temp->exam_mark;
    getline(f, s);
    return temp;
}

Tstudent* Move_to_next_kurs(Tstudent * st)
{
    if(st!=NULL)
    {
        if(st->nkurs==4)
            return NULL;
        else
        {
            st->nkurs++;
            return st;
        }
    }
    return NULL;
}

int Write_to_file(Tstudent* st, ofstream &f)
{
    if(st!=NULL)
    {
        f << st->lastname << endl;
        f << st->name << endl;
        f << st->surname << endl;
        f << st->nkurs << endl;
        f << st->ngroup << endl;
        for ( int i=0; i<nsessions;i++)
            for(int j=0; j<nmarks; j++)
                f << st->marks[i][j] << " ";
        f << endl;
        f << st->study_form << endl;
        f << st->exam_name << endl;
        f << st->exam_mark << endl;
        return 0;
    }
    else
        return 1;
}

int main()
{
    setlocale(0,"Russian");
    ifstream input_file("student.dat.txt");
    ofstream output_file("student_output.dat.txt");
    while(!input_file.eof())
        Write_to_file(Move_to_next_kurs(Read_from_file(input_file)),output_file);
    return 0;
}