第七週上機任務(時間類)
阿新 • • 發佈:2019-01-23
標頭檔案 #pragma once class Time { public: Time(int=0,int=0,int=0); void show_time( ); //根據is_24和from0,輸出適合形式的時間:23:5/8:23:5 pm/08:23:05 pm void add_seconds(int); //增加n秒鐘 void add_minutes(int); //增加n分鐘 void add_hours(int); //增加n小時 static void change24(); //改變靜態成員is_24,在和時制之間轉換 static void changefrom0(); //改變靜態成員from0,轉換是否前導 private: static bool is_24; //為true時,小時制,如:23:5;為flase,小時制,顯示為:23:5 pm static bool from0; //為true時,前導,:23:5顯示為:23:05 int hour; int minute; int sec; };
原始檔 #include "Time.h" #include<iostream> using namespace std; bool Time::is_24=true; bool Time::from0=false; //各成員函式的定義 Time::Time(int h,int m,int s) { hour=h; minute=m; sec=s; } void Time::show_time( ) { int t=(is_24)?hour:(hour%12); if(from0&&t<10) cout<<'0'; cout<<t<<':'; if(from0&&minute<10) cout<<'0'; cout<<minute<<':'; if(from0&&sec<10) cout<<'0'; cout<<sec; if(!is_24) { if(hour>12) cout<<"pm"; else cout<<"am"; } cout<<endl; } void Time::add_seconds(int n) { sec=sec+n; if(sec>59) { sec=sec%60; add_minutes(sec/60); } if(minute>59) { minute=minute%60; add_hours(minute/60); } if(hour>23) { hour=hour%24; } } void Time::add_minutes(int n) { minute=minute+n; if(minute>59) { minute=minute%60; add_hours(minute/60); } if(hour>23) { hour=hour%24; } } void Time::add_hours(int n) { hour=hour+n; if(hour>23) { hour=hour%24; } } void Time::change24() { is_24=!is_24; } void Time::changefrom0() { from0=!from0; }
資原始檔 #include<iostream> #include "Time.h" using namespace std; int main() { Time t1(23,15,25),t2(8,45,6); cout<<"24時制, 不前導:"<<endl; cout<<" t1是:"; t1.show_time(); cout<<" t2是:"; t2.show_time(); t1.add_hours(10); t2.add_hours(10); Time::changefrom0(); cout<<"10小時後, 切換是否前導:"<<endl; cout<<" t1是:"; t1.show_time(); cout<<" t2是:"; t2.show_time(); t1.change24(); cout<<"換一種制式:"<<endl; cout<<" t1是:"; t1.show_time(); cout<<" t2是:"; t2.show_time(); system("pause"); return 0; }
執行結果: