程序代码:
#include <iostream> using namespace std; class CTime//时间类 { private: unsigned short int hour; //时 unsigned short int minute; //分 unsigned short int second; //秒 public: CTime(int h=0,int m=0,int s=0);//构造函数 void setTime(int h,int m,int s);//设置时间 //重载>>实现输入时间 friend istream& operator >>(istream& input, CTime& c); //重载<<实现输出时间 friend ostream& operator <<(ostream& output, CTime& c); //比較运算符(二目)的重载 bool operator > (CTime &t); bool operator < (CTime &t); bool operator >= (CTime &t); bool operator <= (CTime &t); bool operator == (CTime &t); bool operator != (CTime &t); //二目运算符的重载 CTime operator+(CTime &c);//返回c所规定的时、分、秒后的时间。例t1(8,20,25),t2(11,20,50),t1+t2为:41:15 CTime operator-(CTime &c);//对比+理解 CTime operator+(int s);//返回s秒后的时间 CTime operator-(int s);//返回s秒前的时间 //一目运算符的重载 CTime operator++( int);//后置++,下一秒 CTime operator++();//前置++,下一秒,前置与后置返回值不一样 CTime operator--( int);//后置--,前一秒 CTime operator--();//前置--。前一秒 //赋值运算符的重载 CTime operator+=(CTime &c); CTime operator-=(CTime &c); CTime operator+=(int s); CTime operator-=(int s); }; //初始化时间 CTime::CTime(int h, int m, int s) { hour = h; minute = m; second = s; } //初始化时间 void CTime::setTime(int h,int m,int s) { hour = h; minute = m; second = s; } //重载>>实现输入时间 istream& operator >>(istream& input, CTime& c) { char ch1, ch2;//保存时和分、分和秒之间的冒号 do { input>>c.hour>>ch1>>c.minute>>ch2>>c.second; }while(!(':' == ch1 && ':' == ch2)); return input; } //重载<<实现输出时间 ostream& operator <<(ostream& output, CTime& c) { output<<c.hour<<':'<<c.minute<<':'<<c.second<<endl; return output; } //比較运算符(二目)的重载 bool CTime::operator > (CTime &t) { //计算时间为多少秒 int sec1 = hour * 3600 + minute * 60 + second; int sec2 = t.hour * 3600 + t.minute * 60 + t.second; if(sec1 > sec2) { return true; } else { return false; } } bool CTime::operator < (CTime &t) { //计算时间为多少秒 int sec1 = hour * 3600 + minute * 60 + second; int sec2 = t.hour * 3600 + t.minute * 60 + t.second; if(sec1 < sec2) { return true; } else { return false; } } bool CTime::operator >= (CTime &t) { //计算时间为多少秒 int sec1 = hour * 3600 + minute * 60 + second; int sec2 = t.hour * 3600 + t.minute * 60 + t.second; if(sec1 >= sec2) { return true; } else { return false; } } bool CTime::operator <= (CTime &t) { //计算时间为多少秒 int sec1 = hour * 3600 + minute * 60 + second; int sec2 = t.hour * 3600 + t.minute * 60 + t.second; if(sec1 <= sec2) { return true; } else { return false; } } bool CTime::operator == (CTime &t) { //计算时间为多少秒 int sec1 = hour * 3600 + minute * 60 + second; int sec2 = t.hour * 3600 + t.minute * 60 + t.second; if(sec1 == sec2) { return true; } else { return false; } } bool CTime::operator != (CTime &t) { //计算时间为多少秒 int sec1 = hour * 3600 + minute * 60 + second; int sec2 = t.hour * 3600 + t.minute * 60 + t.second; if(sec1 != sec2) { return true; } else { return false; } } //二目运算符的重载 CTime CTime::operator+(CTime &c)//返回c所规定的时、分、秒后的时间。例t1(8,20,25),t2(11,20,50),t1+t2为:41:15 { //将时间化成秒数 int sec1 = hour * 3600 + minute * 60 + second; int sec2 = c.hour * 3600 + c.minute * 60 + c.second; //两个时间相加 int sec3 = sec1 + sec2; CTime t1; t1.hour = sec3 / 3600;//计算时间(时) t1.minute = sec3 % 3600 / 60;//计算时间(分) t1.second = sec3 % 3600 % 60;//计算时间(秒) return t1; } CTime CTime::operator-(CTime &c)//对比+理解 { //将时间化成秒数 int sec1 = hour * 3600 + minute * 60 + second; int sec2 = c.hour * 3600 + c.minute * 60 + c.second; //两个时间相减 int sec3 = sec1 - sec2; CTime t1; t1.hour = sec3 / 3600;//计算时间(时) t1.minute = sec3 % 3600 / 60;//计算时间(分) t1.second = sec3 % 3600 % 60;//计算时间(秒) return t1; } CTime CTime::operator+(int s)//返回s秒后的时间 { CTime t; //将时间化成秒数 int sec1 = hour * 3600 + minute * 60 + second; //计算添加s秒后的时间 int sec2 = sec1 + s; t.hour = sec2 / 3600;//计算时间(时) t.minute = sec2 % 3600 / 60;//计算时间(分) t.second = sec2 % 3600 % 60;//计算时间(秒) return t; } CTime CTime::operator-(int s)//返回s秒前的时间 { CTime t; //将时间化成秒数 int sec1 = hour * 3600 + minute * 60 + second; //计算降低s秒后的时间 int sec2 = sec1 - s; t.hour = sec2 / 3600;//计算时间(时) t.minute = sec2 % 3600 / 60;//计算时间(分) t.second = sec2 % 3600 % 60;//计算时间(秒) return t; } //一目运算符的重载 CTime CTime::operator++( int)//后置++。如i++ { CTime t = *this; *this = *this + 1; return t; } CTime CTime::operator++()//前置++, 如++i; { *this = *this + 1; return *this; } CTime CTime::operator--( int)//后置--, 如i-- { CTime t = *this; *this = *this + 1; return t; } CTime CTime::operator--()//前置--, 如--i { *this = *this - 1; return *this; } //两个时间相加(this是指向Time类的指针) CTime CTime::operator+=(CTime &c) { *this = *this + c; return *this; } //两个时间相减(this是指向Time类的指针) CTime CTime::operator-=(CTime &c) { *this = *this - c; return *this; } //添加s秒 CTime CTime::operator+=(int s) { //将时间化成秒数 int sec1 = hour * 3600 + minute * 60 + second; //计算添加s秒后的时间 int sec2 = sec1 + s; CTime t1; t1.hour = sec2 / 3600;//计算时间(时) t1.minute = sec2 % 3600 / 60;//计算时间(分) t1.second = sec2 % 3600 % 60;//计算时间(秒) return t1; } //降低s秒 CTime CTime::operator-=(int s) { //将时间化成秒数 int sec1 = hour * 3600 + minute * 60 + second; //计算添加s秒后的时间 int sec2 = sec1 - s; CTime t1; t1.hour = sec2 / 3600;//计算时间(时) t1.minute = sec2 % 3600 / 60;//计算时间(分) t1.second = sec2 % 3600 % 60;//计算时间(秒) return t1; } void main() { //定义三个时间对象 CTime t1, t2, t; cout<<"请输入第一个时间:"; cin>>t1; cout<<"请输入第二个时间:"; cin>>t2; //显示第一个时间 cout<<"t1 = "; cout<<t1; //显示第二个时间 cout<<"t2 = "; cout<<t2; cout<<"\n以下比較两个时间大小:\n"; if (t1>t2) cout<<"t1>t2"<<endl; if (t1<t2) cout<<"t1<t2"<<endl; if (t1==t2) cout<<"t1=t2"<<endl; if (t1!=t2) cout<<"t1≠t2"<<endl; if (t1>=t2) cout<<"t1≥t2"<<endl; if (t1<=t2) cout<<"t1≤t2"<<endl; cout<<endl; //两个时间相加 cout<<"t1 + t2 = "; t = t1 + t2; cout<<t; //两个时间相减 cout<<"t1 - t2 = "; t = t1 - t2; cout<<t; //计算t1添加300秒后的时间 cout<<"t1 + 300秒 = "; t = t1 + 300; cout<<t; //计算t1降低300秒后的时间 cout<<"t1 - 300秒 = "; t = t1 - 300; cout<<t; cout<<endl; cout<<"t1 = "; cout<<t1; //计算t1++ cout<<"t1++ = "; t = t1++; cout<<t; cout<<endl; cout<<"t1 = "; cout<<t1; //计算++t1 cout<<"++t1 = "; t = ++t1; cout<<t; cout<<endl; cout<<"t1 = "; cout<<t1; //计算t1-- cout<<"t1-- = "; t = t1--; cout<<t; cout<<endl; cout<<"t1 = "; cout<<t1; //计算--t1 cout<<"--t1 = "; t = --t1; cout<<t; cout<<endl; cout<<"t2 = "; cout<<t2; cout<<"t = "; cout<<t; t2 += t; cout<<"运行 t2 += t1 后 t2 = "; cout<<t2; cout<<endl; cout<<"t2 = "; cout<<t2; cout<<"t = "; cout<<t; t2 -= t; cout<<"运行 t2 -= t1 后 t2 = "; cout<<t2; cout<<endl; system("pause"); }
运行结果:
时间: 2024-11-05 21:49:33