标签：c++【面试题】：类实现万年历（日期计算器） 拷贝构造 含构造函数 运算符重载 析构函数）
#define _CRT_SECURE_NO_WARNINGS 1
#include<iostream>
#include<stdlib.h>
using namespace std;
class Date
{
public:
Date(int year=0, int month=0, int day=0)
:_year(year)
, _month(month)
, _day(day)
{
cout << "构造函数" << endl;
}
Date( const Date& d)
{
cout << "拷贝构造函数" << endl;
_year = d._year;
_month = d._month;
_day = d._day;
}
/*Date& operater = (const Date& d)
{
cout << "运算符重载" <<endl;
}*/
bool operator == (const Date&d)
{
return this->_year == d._year
&& this->_month == d._month
&&this->_day = d._month;
}
//大于
bool operator > (const Date& d)
{
if (this->_year > d._year)
{
return true;
}
else
{
if (this->_year == d._year)
{
if (this->_month > d._month)
{
return true;
}
else
{
if (this->_month == d._month)
{
if (this->_day > d._day)
{
return true;
}
else
{
return false;
}
}
else
{
return false;
}
}
}
else
{
return false;
}
}
}
//小于
bool operator < (const Date& d)
{
if (this->_year < d._year)
{
return true;
}
else
{
if (this->_year == d._year)
{
if (this->_month < d._month)
{
return true;
}
else
{
if (this->_month == d._month)
{
if (this->_day < d._day)
{
return true;
}
else
{
return false;
}
}
else
{
return false;
}
}
}
else
{
return false;
}
}
}
//大于等于
bool operator >= (const Date& d)
{
if (this->_year >= d._year)
{
return true;
}
else
{
return false;
}
}
//小于等于
bool operator <= (const Date& d)
{
if (this->_year <= d._year)
{
return true;
}
else
{
return false;
}
}
//Date operator+ (int day);
Date operator+ (int day)
{
}
void Display()
{
cout << _year << "-" << _month << "-" << _day<<endl;
}
private:
//判断平年闰年
bool IsLeapYear(int year)
{
if ((year % 4 == 0) && (year % 100 != 0) || (year % 400 == 0))
{
return true;
}
else
{
return false;
}
}
//判断天数
int GetMonthDay(int year, int month)
{
if (year && month)
{
int monthArray[13] = { 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
int day = monthArray[month];
if (month == 2 && IsLeapYear(year))
{
day += 1;
}
return day;
}
}
//加天数，Date operator+ (int day)
Date operator+ (int day)
{
int rest = 0;
if (day >= 0)
{
this->_day += day;
while (this->_day > GetMonthDay(2016, 5))
{
rest = this->_day - GetMonthDay(2016, 2);
if (this->_month != 12)
{
this->_month++;
}
else
{
this->_year++;
this->_month = 1;
}
this->_day = rest;
}
}
else
{
Date operator - 50;
}
return *this;
}
//加天数，Date operator+= (int day);
Date operator+= (int day )
{
Date tmp(*this);
tmp._day += day;
int rest = 0;
if (day > 0)
{
while (tmp._day > GetMonthDay(2016, 5))
{
rest = tmp._day - GetMonthDay(2016, 2);
if (tmp._month != 12)
{
tmp._month++;
}
else
{
tmp._year++;
tmp._month = 1;
}
tmp._day = rest;
}
}
else
{
Date operator-= 50;
}
return tmp;
}
//减天数，Date operator- (int day);
Date operator - (int day)
{
int rest = 0;
if (day <= 0)
{
this->_day -= day;
while (this->_day > GetMonthDay(2016, 5))
{
rest = this->_day - GetMonthDay(2016, 2);
if (this->_month != 1)
{
this->_month--;
}
else
{
this->_year--;
this->_month = 12;
}
this->_day = rest;
}
}
else
{
Date operator + 50;
}
return *this;
}
//减天数，Date operator-= (int day);
Date operator-= (int day)
{
int rest = 0;
Date tmp(*this);
if (day <= 0)
{
tmp._day -= day;
while (tmp._day > GetMonthDay(2016, 5))
{
rest = tmp._day - GetMonthDay(2016, 2);
if (tmp._month != 1)
{
tmp._month--;
}
else
{
tmp._year--;
tmp._month = 12;
}
tmp._day = rest;
}
}
else
{
Date operator + 50;
}
return tmp;
}
//前置++
Date operator++()
{
if (day > GetMonthDay(int year, int month))
{
if (month != 12)
{
++this->day;
}
else
{
++year;
month = 1;
day = 1;
}
}
else
{
++day;
}
return *this;
}
//后置++
Date operator++(int)
{
Date tmp(*this);
tmp._day;
if (day > GetMonthDay(int year, int month))
{
if (month != 12)
{
++tmp.day;
}
else
{
++tmp.year;
tmp.month = 1;
tmp.day = 1;
}
}
else
{
++tmp.day;
}
return tmp;
}
//前置--
Date operator++()
{
if (day > GetMonthDay(int year, int month))
{
if (month != 1)
{
++this->day;
}
else
{
--year;
month = 12;
day = 1;
}
}
else
{
--day;
}
return *this;
}
//后置--
Date operator--(int)
{
Date tmp(*this);
tmp._day;
if (day > GetMonthDay(int year, int month))
{
if (month != 1)
{
--tmp.day;
}
else
{
--tmp.year;
tmp.month = 12;
tmp.day = 1;
}
}
else
{
--tmp.day;
}
return tmp;
}
~Date()
{
cout << "析构函数" << endl;
}
private:
int _year;
int _month;
int _day;
};
void Test1()
{
Date d;
d.Display();
Date ret = operator + (50);
}
int main()
{
Test1();
system("pause");
return 0;
}C++【面试题】：类实现万年历（日期计算器），（含构造函数、拷贝构造、运算符重载、析构函数）
标签：c++【面试题】：类实现万年历（日期计算器） 拷贝构造 含构造函数 运算符重载 析构函数）
原文地址：http://10740184.blog.51cto.com/10730184/1736131
