A tourist walks into a pet shop and is browsing around the cages on display. While he's there, another customer walks in and says to the shopkeeper, "I'll have a C monkey, please". The shopkeeper nods, goes over to a cage at the side of the shop and takes out a monkey. He fits a collar and leash and hands it to the customer, saying "That'll be $5000.". The customer pays and walks out with his monkey. Startled, the tourist goes over to the shopkeeper and says " That was a very expensive monkey - most of them are only few hundred dollars. Why did it cost so much? "
" Ah!, that monkey can program in C - very fast, tight code, no bugs, well worth the money".
The tourist looks at the monkey in another cage. "That one's even more expensive - $ 10,000! What does he do?"
"Oh!, that one's a C++ monkey ; it can manage object-oriented programming, PScodes, Visual C++, even some Java, all the real useful stuff".
The tourist looks around for a little longer and sees a third monkey in a cage of its own; The price tag around its neck says $50,000. He gasps to the shopkeeper, "That one costs more than all the others put together! What on earth does it do?". "Well, I haven't actually seen it do anything, but it says it's a consultant"