Bad Variable Names

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Section 18.5 Bad Variable Names

Here is a really nasty example. Don’t ever write code with variable names like this! In the code, towards the right-hand side, comments are there to help you tell the scope of the variables and functions.

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all: global scope - can be used anywhere (in main and functions)

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main: scope is the main function, not known elsewhere

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one: scope is function one

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two: scope is function two

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the function one cannot be called from the function two because of a conflict: in function two, there is a variable parameter that is called one and so this is what the function two will ’think of’ when it ’sees’ one.

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So, function one can be called from main and it can be called from within itself, but it cannot be called from two.

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