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Define Snellen Chart

Define Snellen Chart - It expands to a statement, so you cannot use it as an expression the arguments are not properly parenthesized in the expansion: The #define directive is a preprocessor directive; A good way to understand what the preprocessor does to your code is to get. I've only seen examples where it's used in place of a magic number but i don't see the point in just giving that value to a variable instead. I know that this is a long time after the original query, but this may still be useful. In other words, when the compiler starts building your code, no #define statements or anything like that is left. Explicitly define datatype in python function asked 8 years, 3 months ago modified 2 years, 1 month ago viewed 101k times How do i define a function with optional arguments? This can be done in gcc using the stringify operator #, but it requires two additional stages to be defined first. The preprocessor replaces those macros by their body before the compiler even sees it.

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