Trying to make sense of this always block

Thanks for the helpful responses.

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So first, n_next gets assigned the value of "i" but that doesn't matter because the if statement is false so n_next gets the value of n-1.

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However I did not understand this.. How does it not matter as the value is assigned before the if statement.. need some clarification here please.

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The behavior you mentioned is what I would expect... I think I never write combinational code in always statements like that. To me this would be much easier to understand ...

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Im familiar with this but with these statements I get confused with nested if's..

Thanks