#include <iostream>
#include <stdio.h>
#include <cstdio>
#include <cstdlib>
#include <cmath>
using namespace std;

void default_action();
void add_student();
void edit();
void show_information_about_one_student();
void show_students_passed_eight_nine_ten();
struct data_about_student {
	char FemailIO[30];
	short int year_of_birth;
	int number_of_group;
	short int mark_of_physic;
	short int mark_of_math;
	short int mark_of_informatic;
	short int mark_of_chimestry;
	double several_mark;
} information;
int main() {
	default_action();
	cout << "???";
}
void default_action() {
	printf("\n", "choose waht you need to do\n1. Add student\n2. Edit information about student\n3. Show information about 1 student\n4. Show students, who pass exams on the 8, 9, 10.\n");
	short int variants_of_actions;
	cin >> variants_of_actions;
	cout << endl;
	switch (variants_of_actions) {
	case 1:
			add_student();
			break;
	case 2:
				edit();
				break;
	case 3:

					show_information_about_one_student();
					break;
	case 4:
						show_students_passed_eight_nine_ten();
						break;
	}
}
void add_student() {
	cout << "good1";
}
void edit() {
	cout << "good2";
}
void show_information_about_one_student() {
	cout << "good3";
}
void show_students_passed_eight_nine_ten() {
	cout << "good4";
}