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Developers need hardware to do their programming, so let’s write a small C program to calculate the cost of hardware you’ll need to make some great apps. This example will use all of the concepts from the chapter. This may seem like quite a bit of typing, but every time you type a line of code, you’re burning it into your brain.
As before, go into Xcode and choose File → New File. In the template window, choose Mac OS X → C and C++ → C File, then click Next.