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  1. #include <cmath>
  2. #include <cstdio>
  3. #include <vector>
  4. #include <iostream>
  5. #include <algorithm>
  6. using namespace std;
  7.  
  8. class Time
  9. {
  10.     int hour;
  11.     int minute;
  12.  
  13.     void allFromMinutes()
  14.     {
  15.         hour = minute / 60;
  16.         minute %= 60;
  17.     }
  18. public:
  19.  
  20.     Time() : hour(0), minute(0)
  21.     {}
  22.     Time(int hour, int minute) : hour(hour), minute(minute)
  23.     {}
  24.     Time(Time const& adolf) : Time(adolf.getHour(), adolf.getMinute())
  25.     {}
  26.  
  27.     void addMinutes(int minutes)
  28.     {
  29.         minute += minutes;
  30.         while (minute >= 60)
  31.         {
  32.             minute -= 60;
  33.             hour++;
  34.         }
  35.     }
  36.     void addHour(int hour)
  37.     {
  38.         this->hour += hour;
  39.         while (this->hour > 24)
  40.         {
  41.             this->hour -= 24;
  42.         }
  43.     }
  44.     void removeMinutes(int minutes)
  45.     {
  46.         while (minutes > 0)
  47.         {
  48.             minute -= minutes;
  49.             if (minute < 0)
  50.             {
  51.                 hour--;
  52.                 minutes = (-minute) - 1;
  53.                 minute = 59;
  54.             }
  55.             else
  56.             {
  57.                 minutes -= minutes;
  58.             }
  59.         }
  60.     }
  61.     void removeHour(int hour)
  62.     {
  63.         this->hour -= hour;
  64.         if (this->hour < 0)
  65.         {
  66.             this->hour += 24;
  67.         }
  68.     }
  69.     void setHour(int hour) { this->hour = hour; }
  70.     void setMinute(int minute) { this->minute = minute; }
  71.  
  72.     int allToMinutes() const
  73.     {
  74.         return minute + hour * 60;
  75.     }
  76.  
  77.     int getHour() const { return hour; }
  78.     int getMinute() const {
  79.         return minute;
  80.     }
  81.  
  82.     friend ostream& operator<<(ostream& out, Time const& a);
  83.     Time& operator=(Time const& a)
  84.     {
  85.         setHour(a.getHour());
  86.         setMinute(a.getMinute());
  87.         return *this;
  88.     }
  89.     friend bool operator==(Time const& a, Time const& b)
  90.     {
  91.         return (a.getHour() == b.getHour() && a.getMinute() == b.getMinute());
  92.     }
  93.     Time operator-(Time const& a) const
  94.     {
  95.         Time temp(*this);
  96.         Time res(0, 0);
  97.         while (temp.getHour() != a.getHour())
  98.         {
  99.             temp.addHour(1);
  100.             res.addHour(1);
  101.         }
  102.  
  103.         if (temp.getMinute() > a.getMinute())
  104.         {
  105.             res.removeHour(1);
  106.             res.setMinute(60 - (temp.getMinute() - a.getMinute()));
  107.         }
  108.         else if (temp.getMinute() < a.getMinute())
  109.         {
  110.             res.setMinute((a.getMinute() - temp.getMinute()));
  111.         }
  112.  
  113.         return res;
  114.     }
  115. };
  116.  
  117. ostream& operator<<(ostream& out, Time const& a)
  118. {
  119.     if (a.getHour() < 10) { out << 0; }
  120.     out << a.getHour() << ':';
  121.     if (a.getMinute() < 10) { out << 0; }
  122.     out << a.getMinute();
  123.  
  124.     return out;
  125. }
  126.  
  127. int main() {
  128.  
  129.     Time a(23, 30);
  130.     Time b(1, 30);
  131.  
  132.     Time c(a);
  133.     c = a - b;
  134.     cout << c << endl;
  135.  
  136.     system("pause");
  137.     return 0;
  138. }
  139.  
Success #stdin #stdout #stderr 0s 15232KB
comments (?)
stdin
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Standard input is empty
stdout
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02:00
stderr
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sh: 1: pause: not found
https://ideone.com/2P9MzD
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
public

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