程序中系统时间的获取

// -*- C++ -*-

#ifndef CUTE_DATE_TIME_H_
#define CUTE_DATE_TIME_H_

#include <ctime>
#include <cstdio>
#include <cstring>

class date_time
{
public:
date_time()
{
time_ = ::time(NULL);
tm_ = localtime(&time_);
}

explicit date_time(const time_t tt)
{
time_ = tt;
tm_ = localtime(&time_);
}

// Override operator
inline date_time& operator = (const date_time &dt)
{
if (this != &dt)
{
this->time_ = dt.time_;
this->tm_   = dt.tm_;
}
return *this;
}

inline int year  (void) const {return tm_->tm_year + 1900;}
inline int month (void) const {return tm_->tm_mon  + 1;}
inline int wday  (void) const {return tm_->tm_wday ;}
inline int mday  (void) const {return tm_->tm_mday ;}
inline int hour  (void) const {return tm_->tm_hour ;}
inline int minute  (void) const {return tm_->tm_min ;}
inline int second   (void) const {return tm_->tm_sec ;}

private:
time_t    time_;
struct tm* tm_;
};

#endif // CUTE_DATE_TIME_H_

//使用（C++语法 或者 cocos2dx语法 输出查看）
date_time dt;
cout<<dt.hour()<<":"<<dt.minute()<<":"<<dt.second()<<endl;