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DCL01-EX1: Note that the declaration of a loop counter in a for statement is in violation of this guideline because the declaration is not on its own line with an explanatory comment about the variable's role. However, declaration of loop indices in for statements is not only a common idiom; it also provides the benefit of restricting the scope of the loop index to the for loop itself. This is a specific reason to relax this guideline.
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