Exercise 2.38 about cpp-primer HOT 5 CLOSED

Hi~ @frank67 You are absolutely right. 👍

Could you please propose a pull request for this?

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@pezy maybe when @Mooophy wrote that code he want to declare a new reference to "i" the same way he had declared "r" in the "int i = 0, &r = i;" statements but it's also legal to declare a reference ("d") to another reference ("r") as I proposed.
HTH 😄

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@frank67 I have to say, @Mooophy is innocent... 😞

This confused answer is wrote by me, and I think I need to give some explanations:

1. auto: deduce from the r-value's type. but essentially, thus reference and top-level const are ignored.
2. decltype: deduce from the expression's type, and comprehensive, thus, including both reference and top-level const.

Then, come back this question, give example for difference:

decltype(r) d = i;
         ^^
     here is the key, i or r (right-hand operand of an assignment) is not the point.

So, IMHO, i or r is all okay. 🌝

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@pezy but "d" should it be a reference to "i" or "r" in that contest? Since it's legal to declare a reference to another reference for sake of clarity, since "r" was used in previous "c" assignement, I think "d" should be declared as reference of "r".:blush:

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@frank67 Agree. 👌

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