CSC161 2010F Imperative Problem Solving

Class 29: Macros

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Held: Friday, 15 October 2010

Summary: We consider ways in which to use the C preprocessor, particularly in the use of macros.

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Your Questions

When making #include statements with quotation marks, if the mentioned file isn't found in the working directory, will the compiler look for it in the same directory as the standard C libraries? I felt like the reading implied this but I wanted to be sure.
If it's not in the working directory, then the C compiler will issue an error.
What are are the arcane rules for nested uses of ##?
I don't think there are any. Concatenation can happen left-to-right or right-to-left.


Back to More Debugging with DDD. On to Make, Revisited.

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Samuel A. Rebelsky,