第九章类的深入剖析（I）Time类的定义Time类的实现Time类的实现（续）//printTimeinuniversal-timeformat(HH:MM:SS)voidTime::printUniversal(){cout<<setfill('0')<<setw(2)<<hour<<":"<<setw(2)<<minute<<":"<<setw(2)<<second;}//endfunctionprintUniversal//printTimeinstandard-timeformat(HH:MM:SSAMorPM)voidTime::printStandard(){cout<<((hour==0||hour==12)?12:hour%12)<<":"<<setfill('0')<<setw(2)<<minute<<":"<<setw(2)<<second<<(hour<12?"AM":"PM");}//endfunctionprintStandard接口与实现的分离测试Time类的程序对象的大小第九章类的深入剖析（I）类的作用域类成员的访问Count类intmain(){Countcounter;//createcounterobjectCount*counterPtr=&counter;//createpointertocounterCount&counterRef=counter;//createreferencetocountercout<<"Setxto1andprintusingtheobject'sname:";counter.setX(1);//setdatamemberxto1counter.print();//callmemberfunctionprintcout<<"Setxto2andprintusingareferencetoanobject:";counterRef.setX(2);//setdatamemberxto2counterRef.print();//callmemberfunctionprintcout<<"Setxto3andprintusingapointertoanobject:";counterPtr->setX(3);//setdatamemberxto3counterPtr->print();//callmemberfunctionprintreturn0;}//endmain第九章类的深入剖析（I）访问函数工具函数SalesPerson.h使用工具函数第九章类的深入剖析（I）构造函数构造函数的作用默认构造函数classTime{public:Time(int=0,int=0,int=0);//defaultconstructor//setfunctionsvoidsetTime(int,int,int);//sethour,minute,secondvoidsetHour(int);//sethour(aftervalidation)voidsetMinute(int);//setminute(aftervalidation)voidsetSecond(int);//setsecond(aftervalidation)//getfunctionsintgetHour();//returnhourintgetMinute();//returnminuteintgetSecond();//returnsecondvoidprintUniversal();//outputtimeinuniversal-timeformatvoidprintStandard();//outputtimeinstandard-timeformatprivate:inthour;//0-23(24-hourclockformat)intminute;//0-59intsecond;//0-59};//endclassTime默认构造函数默认构造函数的使用析构函数析构函数的作用调用顺序类变量的生命周期类变量的生命周期CreateAndDestroy类定义CreateAndDestroy::CreateAndDestroy(intID,stringmessageString){objectID=ID;//setobject'sIDnumbermessage=messageString;//setobject'sdescriptivemessagecout<<"Object"<<objectID<<"constructorruns"<<message<<endl;}//endCrea