如下所示：
?
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
#include<iostream>
using namespace std;
class Date
{
public:
Date(int year = 1900, int month = 1, int day = 1) //构造
:_year(year)
, _month(month)
, _day(day)
{
if (!isInvalidDate(_year, _month, _day))
{
_year = 1900;
_month = 1;
_day = 1;
}
}
Date operator+(int count)
{
Date tmp(*this);
tmp._day += count;
ToCorrect(tmp);
return tmp;
}
Date operator-(int count)
{
Date tmp(*this);
tmp._day -= count;
ToCorrect(tmp);
return tmp;
}
Date& operator++() //前置++
{
(*this)++;
return *this;
}
Date operator++(int) //后置++
{
Date tmp(*this);
(*this)+=1;
return tmp;
}
Date& operator--()
{
(*this)--;
return *this;
}
Date operator--(int)
{
Date tmp(*this);
(*this)--;
return tmp;
}
int operator-(const Date &d)
{
int flag = 1;
Date max = *this;
Date min = d;
if (*this<d)
{
max = d;
min = *this;
flag = -1;
}
int count=0;
while (min != max)
{
++min;
count++;
}
return count*flag;
}
Date& operator+=(int day)
{
*this = *this + day;
return *this;
}
bool operator!=(const Date &d)
{
return !(*this == d);
}
bool operator<(const Date &d)
{
return !((*this>d)||(*this==d));
}
bool operator>=(const Date &d)
{
return !(*this<d);
}
bool operator>(const Date &d)
{
return (_year > d._year
|| (_year == d._year && _month > d._month)
|| (_year == d._year && _month == d._month && _day > d._day));
}
bool operator==(const Date &d)
{
return ((_year == d._year) && (_month == d._month) && (_day == d._day));
}
public:
bool IsLeapYear(int year)
{
if(year % 400 || (year % 4 && year % 100))
return true;
return false;
}
int YearsOfMonth(int year, int month)
{
int day;
int days[13] = { 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
day = days[month];
if (month == 2)
day += IsLeapYear(year);
return day;
}
Date ToCorrect(Date &d)
{
if (d._day>YearsOfMonth(d._year, d._month))
{
while (d._day > YearsOfMonth(d._year, d._month))
{
d._day -= YearsOfMonth(d._year,d._month);
if (d._month == 12)
{
d._year++;
d._month = 1;
}
else
{
++d._month;
}
}
}
else
{
while (d._day <= 0)
{
if (d._month == 1)
{
d._year--;
d._month = 12;
}
else
{
--d._month;
}
d._day += YearsOfMonth(d._year, d._month);
}
}
return d;
}
bool isInvalidDate(int year, int month, int day)
{
if ((year < 1) || (month<0 || month>12) || (day<0 || day>YearsOfMonth(year,month)))
return false;
return true;
}
void Display()
{
cout << _year << "-" << _month << "-" << _day << endl;
}
friend istream& operator>>(istream& is, Date &d);
friend ostream& operator<<(ostream& os, const Date &d);
private:
int _year;
int _month;
int _day;
};
istream& operator>>(istream& is, Date& d)
{
cout << "请输入一个日期" << endl;
is >> d._year >> d._month >> d._day;
return is;
}
ostream& operator<<(ostream& os, const Date &d)
{
cout << d._year << "-" <<d. _month << "-" << d._day << endl;
return os;
}
int main()
{
/*Date d1(2016,8,18);
//d1.Display();
//d1 = d1++;
cout << d1 << endl;*/
//Date d1(2015, 12, 3);
//(d1++).Display(); //d1.operator++(&d1, 0);
//(++d1).Display(); //d1.operator++(&d1);
Date d1(2015, 12, 3);
Date d2(2015, 11, 1);
cout << (d1 - d2) << endl;
//Date d1(2015, 12, 3);
//Date ret = d1 + 40; //operator+
//ret.Display();
/*Date d1(2015, 12, 3);
Date ret = d1 + 40;
d1 = ret;
ret = d1 - 40;
ret.Display();*/
/*Date ret;
Date d2(2015, 1, 1);
ret = d2 - 1;
ret.Display();*/
return 0;
}
|
相关文章
猜你喜欢
- ASP.NET自助建站系统的域名绑定与解析教程 2025-06-10
- 个人服务器网站搭建：如何选择合适的服务器提供商？ 2025-06-10
- ASP.NET自助建站系统中如何实现多语言支持？ 2025-06-10
- 64M VPS建站：如何选择最适合的网站建设平台？ 2025-06-10
- ASP.NET本地开发时常见的配置错误及解决方法？ 2025-06-10
