How do you format integers to two digits? 2 -> 02

[dem7w2]

I'm wanting to open a file using date and time but I want my date formatted this way: 08/08/2012 as opposed to: 8/8/2012

I know functions like printf and CSLog that can output integers that way, like so:

    time_t secs=time(0);
    tm *t=localtime(&secs);
    printf("%04d-%02d-%02d %02d:%02d:%02d\n",
           t->tm_year+1900,       t->tm_mon+1,           t->tm_mday,
           t->tm_hour,       t->tm_min,        t->tm_sec);

but I would like what this^^ outputs to be put into a string so I can

ofstream fout(date.c_str());

Any help would be greatly appreciated.

[coder777]

Look at strftime:

http://www.cplusplus.com/reference/clibrary/ctime/strftime/

[modoran]

Use sprintf() if you want to output to a string instead of standard output, like printf() does.

[dem7w2]

Ahhh, either of those should work. Thanks a lot.

[viliml]

cout<<setw(2)<<setfill('0');
should do.