54 lines
1.2 KiB
C++
54 lines
1.2 KiB
C++
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/*
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* exercise_2.hpp
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*
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* Created on: 15 окт. 2021 г.
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* Author: alexander
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*/
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#pragma once
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#include <iostream>
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#include <numeric>
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#include <fstream>
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#include "src-gen/exercise_2.pb.h"
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void exercise_1_2()
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{
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exercise_2::FullName fn;
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fn.set_name("Alexander");
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fn.set_surname("Zhirov");
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fn.set_patronymic("Alexandrovich");
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exercise_2::Student s;
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*s.mutable_name() = fn;
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s.add_grades(5);
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s.add_grades(2);
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s.add_grades(4);
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s.add_grades(3);
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s.add_grades(4);
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s.add_grades(3);
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s.add_grades(4);
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s.add_grades(3);
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s.set_avg_score(std::accumulate(s.grades().begin(), s.grades().end(), 0) / s.grades().size());
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exercise_2::StudentsGroup sg;
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*sg.add_students() = s;
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std::ofstream out("student.bin", std::ios_base::binary);
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sg.SerializeToOstream(&out);
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out.close();
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exercise_2::StudentsGroup new_sg;
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std::ifstream in("student.bin", std::ios_base::binary);
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if (new_sg.ParseFromIstream(&in))
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{
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std::cout << new_sg.students(0).name().surname() << std::endl;
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std::cout << new_sg.students(0).avg_score() << std::endl;
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}
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else
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{
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std::cout << "Error!" << std::endl;
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}
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in.close();
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}
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