C++课后作业 20. 运算符重载课堂练习：分钟秒钟的时间相减

• • 前引
  • 原题题目
  • 代码实现
  • 提交结果

感觉有点像
C++智商训练营了

#include 
using namespace std;
#define N 100

class CTime {
 public:
  CTime() : minutes_(0), seconds_(0) {}
  CTime(const int& minutes__, const int& seconds__)
      : minutes_(minutes__), seconds_(seconds__) {}

  void input() {
    cin >> minutes_ >> seconds_;
  }

  int totalseconds() const {
    return minutes_ * 60 + seconds_;
  }

  CTime operator-(const CTime& other) {
    CTime tmp(*this);
    int seconds = totalseconds();
    int other_totalseconds = other.totalseconds();

    int totalseconds = seconds - other_totalseconds;
    int new_minutes = totalseconds / 60;
    int new_seconds = totalseconds % 60;

    return CTime(new_minutes, new_seconds);
  }

  friend ostream& operator<< (ostream& os, const CTime& time);

  bool beZero() const {
    return minutes_ == 0 && seconds_ == 0;
  }

 public:
  int minutes_;
  int seconds_;
};

ostream& operator<< (ostream& os, const CTime& time) {
  return os << time.totalseconds() << endl;
}

int main() {
  CTime time[N];
  int count = -1;
  do
  {
    count++;
    time[2 * count].input();
    time[2 * count + 1].input();
  } while (!(time[2 * count].beZero() && time[2 * count + 1].beZero()));

  for (int i = 0; i < count; ++i) {
    cout << time[2 * i + 1] - time[2 * i] << endl;
  }
  return 0;
}