cppPersonStructSort

#include<iostream>

struct Person
{
    uint16_t id;
    char* fname;
    char* sname;
};

void personInit(Person& person, uint16_t id, const char* fname, const char* sname)
{
    person.id = id;
    int strLen{ (int)strlen(fname) + 1 };
    person.fname = new char[strLen];
    strcpy_s(person.fname, strLen, fname);
    strLen = strlen(sname) + 1;
    person.sname = new char[strLen];
    strcpy_s(person.sname, strLen, sname);
}

void personClean(Person& person)
{
    delete[] person.fname;
    delete[] person.sname;
}

void personPrint(const Person& person, bool fnameFirst = true)
{
    std::cout << person.id << ". ";
    if (fnameFirst)
    {
        std::cout << person.fname << ' ' << person.sname << '\n';
    }
    else
    {
        std::cout << person.sname << ' ' << person.fname << '\n';
    }

}

void personsSort(Person* persons, int size, bool(*criteria)(const Person&, const Person&))
{
    Person tmp;
    for (int head{ 0 }; head < size; ++head)
    {
        for (int tail{ size - 1 }; tail > head; --tail)
        {
            if (criteria(persons[tail],persons[head]))
            {
                tmp = persons[tail];
                persons[tail] = persons[head];
                persons[head] = tmp;
            }
        }
    }
}


bool personByFName(const Person& personA, const Person& personB)
{
    return (strcmp(personA.fname, personB.fname) < 0);
}

bool personBySName(const Person& personA, const Person& personB)
{
    return (strcmp(personA.sname, personB.sname) < 0);
}


bool personById(const Person& personA, const Person& personB)
{
    return personA.id < personB.id;
}

int main()
{
    const int personsSize{ 3 };
    Person persons[personsSize];

    personInit(persons[0], 1, "Petr", "Ivanov");
    personInit(persons[1], 2, "Ivan", "Sidorov");
    personInit(persons[2], 3, "Sidor", "Petrov");

    std::cout << "Original\n";
    for (int i{ 0 }; i < personsSize; ++i)
    {
        personPrint(persons[i]);
    }

    personsSort(persons, personsSize, personByFName);

    std::cout << "\nSorted by First Name\n";
    for (int i{ 0 }; i < personsSize; ++i)
    {
        personPrint(persons[i]);
    }

    personsSort(persons, personsSize, personBySName);

    std::cout << "\nSorted by Second Name\n";
    for (int i{ 0 }; i < personsSize; ++i)
    {
        personPrint(persons[i]);
    }

    personsSort(persons, personsSize, personById);

    std::cout << "\nSorted by ID\n";
    for (int i{ 0 }; i < personsSize; ++i)
    {
        personPrint(persons[i]);
    }

    std::cout << "\nCleaning...\n";
    for (int i{ 0 }; i < personsSize; ++i)
    {
        personClean(persons[i]);
    }

    return 0;
}