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The C++ preprocessor gives you a lot more flexibility with the language. It also gives you a lot of new ways of screwing up.
What are the variable types of sam and joe?
1 /************************************************
2 * Toy program that declares two variables *
3 ************************************************
4 #define CHAR_PTR char *
5
6 int main()
7 {
8 CHAR_PTR sam, joe;
9
10 return (0);
11 }
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I worked on the first commercial waterjet cutter. The machine was essentially a giant squirt gun that cut out tennis shoe insoles with a high pressure jet of water.
Since it was the first one ever made, we spent a lot of time tuning it. About a year. We had a deal with the tennis shoe maker who was buying it. They would give us free raw material to test with if we sent the cut pieces back to them.
For about a year we tested. Since we wanted to get consistent results we almost always used the same test size: 9 right. We dutifully boxed up the cut pieces and sent them to the tennis shoe maker so that they could make shoes out of them. Or so we thought.
About a week before we were scheduled to ship the machine we got a call from someone at the tennis shoe plant.
Tennis shoe plant: "Are you the people who keep sending all the 9 rights to us?"
Us: "Yes."
Plant: "Finally, I found you people. I've been trying to track you down for a year. Purchasing has no record of any cut piece order for you and it was very difficult to find you."
Us: "Is there a problem?"
Plant: "Yes. Do you realize that you've shipped us 10,000 nine rights and no lefts?"
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