psds-cpp-2025/03_week/tasks/easy_compare/easy_compare.cpp at 584301235161eef1016e8a7273f97fb1a94cc582 · psds-cpp/psds-cpp-2025 · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
#include <stdexcept>
#include <tuple>

struct Date
{
    unsigned year;
    unsigned month;
    unsigned day;
};

struct StudentInfo
{
    size_t id;
    char mark;
    int score;
    unsigned course;
    Date birth_date;
};

bool operator<(const Date &s1, const Date &s2)
{
    return std::tie(s1.year, s1.month, s1.day) < std::tie(s2.year, s2.month, s2.day);
}

bool operator==(const Date &s1, const Date &s2)
{
    return std::tie(s1.year, s1.month, s1.day) == std::tie(s2.year, s2.month, s2.day);
}

bool operator==(const StudentInfo &s1, const StudentInfo &s2)
{
    return std::tie(s1.mark, s1.score) == std::tie(s2.mark, s2.score);
}

bool operator<(const StudentInfo &s1, const StudentInfo &s2)
{
    return std::tie(s2.mark, s1.score, s2.course, s1.birth_date) <
           std::tie(s1.mark, s2.score, s1.course, s2.birth_date);
}

bool operator!=(const StudentInfo &s1, const StudentInfo &s2) { return !(s1 == s2); }
bool operator>(const StudentInfo &s1, const StudentInfo &s2) { return s2 < s1; }
bool operator<=(const StudentInfo &s1, const StudentInfo &s2) { return !(s2 < s1); }
bool operator>=(const StudentInfo &s1, const StudentInfo &s2) { return !(s1 < s2); }

bool operator!=(const Date &d1, const Date &d2) { return !(d1 == d2); }
bool operator>(const Date &d1, const Date &d2) { return d2 < d1; }
bool operator<=(const Date &d1, const Date &d2) { return !(d2 < d1); }
bool operator>=(const Date &d1, const Date &d2) { return !(d1 < d2); }