C Tutorial

Hey, I know some basics of Python, C++ and Lua programming - especially Python. But now I want to dive deeper into the world of C++ and therefore I thought that I definetely should start with C if I want to understand it completely and be able to read already available sources. Anyone got a good recommendation for a C tutorial? (Crash-course would be great, something I can read in 2-3 hours)

>>20
What's so bad about this

def function(parameter):
    x = do_something(parameter + 1, "Hello %s" % "/prog/")
    return x