A man walked into a pet shop and was looking at the animals on display. While he was there, another customer walked in and went over to a cage at the side of the shop and took out a monkey. The shopkeeper fits a collar and leash, handed it to the customer, saying, ''That'll be N50,000.'' The customer paid and walked out with his monkey. Startled, the man went over to the shopkeeper and said, ''That was a very expensive monkey. Most of them are only a few hundred naira. Why did it cost so much?'' The shopkeeper answered, ''Ah, that monkey can program in C - very fast, tight code, no bugs, well worth the money.'' The man looked at the monkey in another cage. ''That one's even more expensive - N100,000! What does it do?'' ''Oh, that one's a C++ monkey; it can manage object-oriented programming, Visual C++, even some Java. All the really useful stuff,'' said the shopkeeper. The man...