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I'm trying my hand at the iPhone course from Stanford on iTunes U and I'm a bit confused about pointers. In the first assignment, I tried doing something like this NSString *processName = [[NSProcessInfo processInfo] processName]; NSInteger *processID = [[NSProcessInfo processInfo] processIdentifier]; Which generated an error, after tinkeing around blindly, I discovered that it was the * in the NSInteger line that was causing the problem. So I obviously don't understand what's happening. I'll explain how I think it works and perhaps someone would be kind enough to point out the flaw. Unlike in web development, I now need to worry about memory, well, more so than in web development. So when I create a variable, it gets allocated a bit of memory somewhere (RAM I assume). Instead of passing the variable around, I pass a pointer to that bit of memory around. And pointers are declared by prefixing the variable name with *. Assuming I'm right, what puzzles me is why don't I need to do that for NSInteger?

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