c++ - how to get previous day date using boost?

Question

I have a set of dates represented as strings and whilst it is easy to convert these to date types, I must perform calculations which will require the previous days date. So for example if I have the date 13-09-2013 I will need to derive the date 12-09-2013. Is there a clean way of achieving this? Ideally using boost.

thanks un advance

Answer 1

using namespace boost::gregorian;
date d(2013,Sep,13);
d -= days(1);

演示

Answer 2

只需获取当前日期，减去一天，就可以得到昨天。