https://otvet.mail.ru/question/237747076

#include <string>
#include <iostream>
#include <limits>
#include <vector>

using namespace std;

template<typename T>
T input(istream& inp, const char* prompt) {
    cout << prompt;
    T value{};
    inp >> value;
    inp.ignore(0x1000, '\n');
    return value;
}

template<>
string input(istream& inp, const char* prompt) {
    cout << prompt;
    string value;
    getline(inp, value);
    return value;
}

struct Student {
    string name;
    char gender;
    short course;
    float height;
    short mathematics;
    short physics;
    short informatics;
    short chemistry;
    short economy;
    Student() :
        gender(' '),
        course(0),
        height(0.0),
        mathematics(0),
        physics(0),
        informatics(0),
        chemistry(0),
        economy(0) {}
    bool is_same_height(const Student& student) const {
        return height == student.height;
    }
private:
    friend istream& operator>>(istream& inp, Student& student) {
        student.name = input<string>(inp, "Фамилия: ");
        student.gender = input<char>(inp, "Пол (м или ж): ");
        student.course = input<short>(inp, "Курс: ");
        student.height = input<float>(inp, "Рост: ");
        student.mathematics = input<short>(inp, "Оценка по математике: ");
        student.physics = input<short>(inp, "Оценка по физике: ");
        student.informatics = input<short>(inp, "Оценка по информатике: ");
        student.chemistry = input<short>(inp, "Оценка по химии: ");
        student.economy = input<short>(inp, "Оценка по экономике: ");
        return inp;
    }
};

class Students {
public:
    Students(const size_t length) {
        table.resize(length);
    }
    bool is_man() const {
        for (const auto& student : table) {
            if (student.gender == 'м') {
                return true;
            }
        }
        return false;
    }
    Student tallest_man() const {
        Student sample;
        for (const auto& student : table) {
            if (student.gender == 'м' && sample.height < student.height) {
                sample = student;
            }
        }
        return sample;
    }
    Student shortest_man() const {
        Student sample;
        sample.height = numeric_limits<float>::max();
        for (const auto& student : table) {
            if (student.gender == 'м' && student.height < sample.height) {
                sample = student;
            }
        }
        return sample;
    }
    double average_height_of_men() const {
        auto sum = 0.0;
        auto quantity = 0U;
        for (const auto& student : table) {
            if (student.gender == 'м') {
                sum += student.height;
                ++quantity;
            }
        }
        return sum / quantity;
    }
private:
    vector<Student> table;
    friend istream& operator>>(istream& inp, Students& students) {
        for (auto& student : students.table) inp >> student;
        return inp;
    }
};

int main() {
    system("chcp 1251 > nul");
    const auto n = input<size_t>(cin, "Количество студентов: ");
    Students students(n);
    cin >> students;
    if (!students.is_man()) puts("Мужчин не найдено!");
    else {
        auto high = students.tallest_man();
        auto low = students.shortest_man();
        if (high.is_same_height(low)) puts("Все мужчины одинакового роста");
        else {
            cout.setf(ios::fixed);
            cout.precision(1);
            auto avg = students.average_height_of_men();
            cout << "Средний рост студентов мужского пола: " << avg << '\n';
            cout << "Самый высокий: " << high.name << ", его рост: " << high.height << '\n';
            cout << "Самый низкий: " << low.name << ", его рост: " << low.height << '\n';
        }
    }
    system("pause > nul");
}