C++程序设计: 设计一个时间类Time,要求如下:

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解决时间 2021-03-23 22:27

提问者网友：情系雨樱花
2021-03-23 12:47

C++程序设计:
设计一个时间类Time,要求如下:⑴:包含时（hour），分（minute），秒（second）私有数据成员。
⑵:包含构造函数，重载关于一段时间加上另一段时间的加法运算符“+”、重载关于一段时间减去另一段时间的减法运算符“-”、重载输入运算符“＜＜”和输出运算符“＞＞”

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二级知识专家网友：丢不掉的轻狂
2021-03-23 13:39

#include<iostream> #include<cstdlib> #include<string> using namespace std; class time { public: time() :h(0), m(0), s(0){} time(int newh, int newm, int news) :h(newh), m(newm), s(news){} int geth(){ return h; } int getm(){ return m; } int gets(){ return s; } void seth(int newh){ h = newh; } void setm(int newm){ m = newm; } void sets(int news){ s = news; } void display12(); private: int h, m, s; }; int main() { time t1(24, 4, 12), t2(2, 6, 6); t1.display12(); t2.display12(); system("pause"); return 0; } void time::display12() { string time; int h1; if (h > 12 && h != 24) { h1 = h - 12; time = "pm"; } else if (h == 24) { h1 = 0; time = "pm"; } else { h1 = h; time = "am"; } if (h1 / 10 == 0) cout << '0' << h1<<':'; else cout << h1<<':'; if (m / 10 == 0) cout << '0' << m << ':'; else cout << m << ':'; if (s / 10 == 0) cout << '0' << s; else cout << s; cout << time << endl; return; }

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1楼网友：野性且迷人
2021-03-23 13:59

#include<iostream> using namespace std; class Time { public: Time(void); Time(int hour,int minute,int second); Time operator +(const Time &time); Time operator -(const Time &time); friend ostream& operator <<(ostream& out,const Time &time); friend istream& operator >>(istream& in,const Time &time); private: int hour; int minute; int second; }; Time::Time(void) { this->hour = 0; this->minute = 0; this->second = 0; } Time::Time(int hour,int minute,int second) { this->hour = hour; this->minute = minute; this->second = second; } Time Time::operator +(const Time &time) { Time newTime; newTime.hour = this->hour + time.hour; newTime.minute = this->minute+ time.minute; newTime.second = this->second + time.second; if(newTime.second >= 60) { newTime.second %= 60; newTime.minute += 1; } if(newTime.minute >= 60) { newTime.minute %= 60; newTime.hour += 1; } if(newTime.hour >= 24) { newTime.hour %= 24; } return newTime; } Time Time::operator -(const Time &time) { Time newTime; newTime.hour = this->hour - time.hour; newTime.minute = this->minute - time.minute; newTime.second = this->second - time.second; if(newTime.second < 0) { newTime.second += 60; newTime.minute -= 1; } if(newTime.minute < 0) { newTime.minute += 60; newTime.hour -= 1; } if(newTime.hour < 0) { newTime.hour += 24; } return newTime; } ostream& operator <<(ostream& out,const Time &time) { out<<time.hour<<":"<<time.minute<<":"<<time.second<<endl; return out; } istream& operator >>(istream& in,const Time &time) { in>>time.hour>>time.minute>>time.second; return in; }

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