c++ - 如何用time_t改变日期和时间的格式？

Question

time_t now = time(0);  
std::string h = std::string (ctime (&now));

std::cout << "\nh: " << h;

我收到的当前输出是:Thu Sep 14 10:58:26 2017

我希望输出为 2017-08-26-16-10-56

我可以对该输出做什么？

Answer 1

使用strftime ，像这样:

strftime (buffer, 80,"%Y-%m-%d-%H-%M-%S",timeinfo);

---

完整代码:

#include <cstdio>
#include <ctime>

int main ()
{
  time_t rawtime;
  struct tm * timeinfo;
  char buffer [80];

  time (&rawtime);
  timeinfo = localtime (&rawtime);

  strftime (buffer, 80,"%Y-%m-%d-%H-%M-%S",timeinfo);
  puts (buffer);

  return 0;
}

输出:

2017-09-14-14-41-19