编译时记录编译时间

#include <iostream>
using namespace std;

int main()
{
        cout << __TIME__ << endl;
        cout << __DATE__ << endl;
}

output:

/home/a/j/nomad2:./a.out
19:53:31
Aug 29 2011
/home/a/j/nomad2:./a.out
19:53:31
Aug 29 2011