Time类的初步实现与测试
#include <iostream> using namespace std; class Time { public: Time(): hour(0), minute(0), sec(0){} Time(int h, int m, int s):hour(h), minute(m), sec(s){} void set_time( ); void show_time( ); void add_a_sec(); //增加1秒钟 void add_a_minute(); //增加1分钟 void add_an_hour(); //增加1小时 private: int hour; int minute; int sec; }; void Time::set_time( ) { cin>>hour>>minute>>sec; } void Time::show_time( ) { cout<<hour<<":"<<minute<<":"<<sec<<endl; } int main( ) { Time t1; t1.show_time(); t1.set_time( ); t1.show_time( ); Time t2(8,20,50); t2.show_time( ); return 0; }
Time中时间调整功能的实现与测试
#include <iostream> using namespace std; class Time { public: Time(): hour(0), minute(0), sec(0){} Time(int h, int m, int s):hour(h), minute(m), sec(s){} void set_time( ); void show_time( ); void add_a_sec(); //增加1秒钟 void add_a_minute(); //增加1分钟 void add_an_hour(); //增加1小时 private: int hour; int minute; int sec; }; void Time::set_time( ) { cin>>hour>>minute>>sec; } void Time::show_time( ) { cout<<hour<<":"<<minute<<":"<<sec<<endl; } void Time::add_a_sec() { ++sec; if (sec>59) { sec=0; add_a_minute(); } } void Time::add_a_minute() { ++minute; if (minute>59) { minute=0; add_an_hour(); } } void Time::add_an_hour() { ++hour; if (hour>23) hour=0; } int main( ) { Time t1(8,20,50); t1.add_a_sec(); t1.show_time(); Time t2(8,20,59); t2.add_a_sec(); t2.show_time(); return 0; }
这样测试更有效!
#include <iostream> using namespace std; class Time { public: Time(): hour(0), minute(0), sec(0){} Time(int h, int m, int s):hour(h), minute(m), sec(s){} void set_time( ); void show_time( ); void add_a_sec(); //增加1秒钟 void add_a_minute(); //增加1分钟 void add_an_hour(); //增加1小时 private: int hour; int minute; int sec; }; void Time::set_time( ) { cin>>hour>>minute>>sec; } void Time::show_time( ) { cout<<hour<<":"<<minute<<":"<<sec<<endl; } void Time::add_a_sec() { ++sec; if (sec>59) { sec=0; add_a_minute(); } } void Time::add_a_minute() { ++minute; if (minute>59) { minute=0; add_an_hour(); } } void Time::add_an_hour() { ++hour; if (hour>23) hour=0; } int main( ) { int i; Time t1(8,20,50); for(i=0; i<20; i++) { t1.add_a_sec(); t1.show_time(); } Time t2(10,56,50); for(i=0; i<10; i++) { t2.add_a_minute(); t2.show_time(); } Time t3(21,20,50); for(i=0; i<10; i++) { t3.add_an_hour(); t3.show_time(); } return 0; }
用单步更灵活的测试!
#include <iostream> using namespace std; class Time { public: Time(): hour(0), minute(0), sec(0){} Time(int h, int m, int s):hour(h), minute(m), sec(s){} void set_time( ); void show_time( ); void add_a_sec(); //增加1秒钟 void add_a_minute(); //增加1分钟 void add_an_hour(); //增加1小时 private: int hour; int minute; int sec; }; void Time::set_time( ) { cin>>hour>>minute>>sec; } void Time::show_time( ) { cout<<hour<<":"<<minute<<":"<<sec<<endl; } void Time::add_a_sec() { ++sec; if (sec>59) { sec=0; add_a_minute(); } } void Time::add_a_minute() { ++minute; if (minute>59) { minute=0; add_an_hour(); } } void Time::add_an_hour() { ++hour; if (hour>23) hour=0; } //以下测试,要结合在单步执行中观察窗口修改变量的值进行 int main( ) { int debug=1; Time t1(8,20,50); while(debug) { t1.add_a_sec(); } debug=1; while(debug) { t1.add_a_minute(); } debug=1; while(debug) { t1.add_an_hour(); } return 0; }
Time类的完善:增加调整时间的方式
#include <iostream> using namespace std; class Time { public: Time(): hour(0), minute(0), sec(0) {} Time(int h, int m, int s):hour(h), minute(m), sec(s) {} void set_time( ); void show_time( ); void add_a_sec(); //增加1秒钟 void add_a_minute(); //增加1分钟 void add_an_hour(); //增加1小时 void add_seconds(int); //增加n秒钟 void add_minutes(int); //增加n分钟 void add_hours(int); //增加n小时 private: int hour; int minute; int sec; }; void Time::set_time( ) { cin>>hour>>minute>>sec; } void Time::show_time( ) { cout<<hour<<":"<<minute<<":"<<sec<<endl; } void Time::add_a_sec() { ++sec; if (sec>59) { sec=0; add_a_minute(); } } void Time::add_a_minute() { ++minute; if (minute>59) { minute=0; add_an_hour(); } } void Time::add_an_hour() { ++hour; if (hour>23) hour=0; } void Time::add_seconds(int n) { sec+=n; if (sec>59) { add_minutes(sec/60); sec%=60; } } void Time::add_minutes(int n) { minute+=n; if (minute>59) { add_hours(minute/60); minute%=60; } } void Time::add_hours(int n) { hour+=n; if (hour>23) hour%=24; } int main( ) { Time t1(21, 32, 45); t1.add_seconds(40); //增加40秒钟 cout<<"增加40秒钟后:"; t1.show_time( ); t1.add_minutes(127); //增加127分钟 cout<<"增加127分钟后:"; t1.show_time( ); t1.add_hours(8); //增加小时 cout<<"增加8小时后:"; t1.show_time( ); return 0; }
Time类的完善:录入中的格式和数据成员数值限制
#include <iostream> using namespace std; class Time { public: Time(): hour(0), minute(0), sec(0) {} Time(int h, int m, int s):hour(h), minute(m), sec(s) {} void set_time( ); void show_time( ); void add_a_sec(); //增加1秒钟 void add_a_minute(); //增加1分钟 void add_an_hour(); //增加1小时 void add_seconds(int); //增加n秒钟 void add_minutes(int); //增加n分钟 void add_hours(int); //增加n小时 private: bool is_time(int, int, int); int hour; int minute; int sec; }; void Time::set_time( ) { char c1,c2; cout<<"请输入时间(格式hh:mm:ss)"; while(1) { cin>>hour>>c1>>minute>>c2>>sec; if(c1!=':'||c2!=':') cout<<"格式不正确,请重新输入"<<endl; else if (!is_time(hour,minute,sec)) cout<<"时间非法,请重新输入"<<endl; else break; } } bool Time::is_time(int h,int m, int s) { if (h<0 ||h>24 || m<0 ||m>60 || s<0 ||s>60) return false; return true; } void Time::show_time( ) { cout<<hour<<":"<<minute<<":"<<sec<<endl; } void Time::add_a_sec() { ++sec; if (sec>59) { sec=0; add_a_minute(); } } void Time::add_a_minute() { ++minute; if (minute>59) { minute=0; add_an_hour(); } } void Time::add_an_hour() { ++hour; if (hour>23) hour=0; } void Time::add_seconds(int n) { sec+=n; if (sec>59) { add_minutes(sec/60); sec%=60; } } void Time::add_minutes(int n) { minute+=n; if (minute>59) { add_hours(minute/60); minute%=60; } } void Time::add_hours(int n) { hour+=n; if (hour>23) hour%=24; } int main( ) { Time t1; t1.set_time(); t1.show_time( ); return 0; }
时间: 2024-09-05 09:22:05