Показания электронных часов (2) :c

#include <chrono>
#include <iostream>
 
using namespace std;
 
int main() {
    unsigned HStart = 1, MStart = 10, SStart = 20; // Начало отрезка времени
    unsigned HEnd = 2, MEnd = 20, SEnd = 30; // Конец
 
    auto Start = chrono::hours(HStart) + chrono::minutes(MStart) + chrono::seconds(SStart);
    auto End = chrono::hours(HEnd) + chrono::minutes(MEnd) + chrono::seconds(SEnd);
    auto Dist = End - Start;
 
    auto HDist = chrono::duration_cast<chrono::hours>(Dist).count();
    Dist -= chrono::hours(HDist);
    auto MDist = chrono::duration_cast<chrono::minutes>(Dist).count();
    Dist -= chrono::minutes(MDist);
    auto SDist = chrono::duration_cast<chrono::seconds>(Dist).count();
    cout << HDist << " " << MDist << " " << SDist << endl;
}

#include <iostream>
using namespace std;
typedef struct {int h; int m; int s;} mt;
 
int main() {
    auto as = [](mt t) -> int {return t.h*3600+t.m*60+t.s;};
    auto task = [=](mt t1, mt t2) -> mt {
        int ss=as(t2)-as(t1), s=ss%60, m=(ss/60)%60, h=ss/3600;
        mt r = {h,m,s}; return r;};
    auto show = [](mt t) -> int {cout<<t.h<<'\t'<<t.m<<'\t'<<t.s;};
    mt t1 = {10,30,40}, t2 = {14,20,10};
    show(task(t1, t2));
    return 0;
}