1 # include <iostream>
2 # include <windows.h>
3 # include <time.h>
4 # include <iomanip>
5 # define BUF 255
6
7 using namespace std;
8
9 class Time
10 {
11 private:
12 int hour,minute,second;
13 public:
14 Time():hour(0),minute(0),second(0){}
15 Time(int h,int m,int s):hour(h),minute(m),second(s){}
16
17 //成员函数 前++重载
18 /*Time operator++()
19 {
20 this->second+=1;
21 if(this->second==60)
22 {
23 this->second=0;
24 this->minute++;
25 }
26 if(this->minute==60)
27 {
28 this->minute=0;
29 this->hour++;
30 }
31 if(this->hour==24)
32 {
33 this->hour=0;
34 }
35 }*/
36
37 //友元函数 前++重载
38 friend operator++(Time &time1)
39 {
40 time1.second+=1;
41 if(time1.second==60)
42 {
43 time1.second=0;
44 time1.minute++;
45 }
46 if(time1.minute==60)
47 {
48 time1.minute=0;
49 time1.hour++;
50 }
51 if(time1.hour==24)
52 {
53 time1.hour=0;
54 }
55 }
56
57 //成员函数 后++重载
58 /*Time operator++(int)
59 {
60 this->second+=1;
61 if(this->second==60)
62 {
63 this->second=0;
64 this->minute++;
65 }
66 if(this->minute==60)
67 {
68 this->minute=0;
69 this->hour++;
70 }
71 if(this->hour==24)
72 {
73 this->hour=0;
74 }
75 }*/
76
77 //友元函数 后++重载
78 friend operator++(Time &time1,int)
79 {
80 time1.second+=1;
81 if(time1.second==60)
82 {
83 time1.second=0;
84 time1.minute++;
85 }
86 if(time1.minute==60)
87 {
88 time1.minute=0;
89 time1.hour++;
90 }
91 if(time1.hour==24)
92 {
93 time1.hour=0;
94 }
95 }
96 //重载流插入 <<运算符
97 /*friend ostream &operator<<(ostream &out, const Time &time1)
98 {
99 out <<setw(2)<<time1.hour<< " : " <<setw(2)<<time1.minute<< " : " <<setw(2)<<time1.second;
100 return out;
101 }*/
102 void show()
103 {
104 time_t t = time( 0 );
105 char tmpBuf[BUF];
106 strftime(tmpBuf, BUF, "%Y-%m-%d %H:%M:%S %A", localtime(&t));
107 printf("time is [%s]",tmpBuf);
108 }
109 };
110
111 int main()
112 {
113 int hour,minute,second;
114 //获取系统时间
115 time_t time2;
116 struct tm *p;
117 time (&time2);
118 p=gmtime(&time2);
119 hour=8+p->tm_hour;
120 minute=p->tm_min;
121 second=p->tm_sec;
122 Time time1(hour,minute,second);
123 while(1)
124 {
125 time1.show();
126 Sleep(1000);
127 //++time1;
128 time1++;
129 system("CLS");
130 }
131 return 0;
132 }
