Chapter 6 involves a lot of STL containers. Although I analyzed most of the routines, I can't even get started with STL's learning. Why do you say this? Because the STL itself is enough to write a single and C Primer as thick books, the generic algorithm, function objects, interfaces, iterators in STL, if it is also string, my mother, this game is not too It is easy to play. Of course, there is a function, and there are functions, templates, classes, streams behind C Primer. These things are hard-fed. The most terrible so-called objective thinking, this thing is more complicated. The longer the C syntax, the more difficult it is, the longer it is, because: the first, generic concept; second, the object of the object is guided; if you take it out, it is enough, the two are enough, both are mixed, stirred, Wow thiophene, the whole of Ili middle-aged milk powder! Since it is a game, of course, it is more difficult, so I have to continue playing, when is it? Tube! Namo Amitabha! Life is just an absurd game, why bother?