Joey Korenman takes a look at providing the basic foundations for using Xpresso and expressions in Cinema 4D by creating expressions that will actually run a Clock which will keep real time.

Learn the basics of XPresso in Cinema 4D by rigging a clock to run automatically in real-time, or at whatever speed you choose

In previous tutorials, Joey took a look at using Expressions in After Effects, and here he provides a similar basic foundation for using Xpresso in Cinema 4D, but also showing some more advanced expression behavior as well. Check out the tutorial for Rigging a Clock in Cinema 4D with Xpresso here.