C Program to find day of week given date

Question

Is there a way to find out day of the week given date in just one line of C code?

For example

Given 19-05-2011(dd-mm-yyyy) gives me Thursday

Answer 1

Not in one line of code, there's nothing for dealing with dates in the C standard library. It would be fairly simple to write a function based on the Doomsday algorithm, or similar, though.