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      2. C++ 引用中 & 符号在语义上的准确位置是什么

        What#39;s the semantically accurate position for the ampersand in C++ references(C++ 引用中 符号在语义上的准确位置是什么)
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                  本文介绍了C++ 引用中 & 符号在语义上的准确位置是什么的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!



                  It's pretty common knowledge that the semantically accurate way to declare pointers is

                  int *x;


                  int* x;

                  这是因为 C 将 *x 视为 int,而不是将 x 视为 int 指针.

                  This is because C sees *x as an int, not x as an int pointer.


                  int* a, b;

                  其中a 是一个int 指针,而b 是一个int.

                  where a is an int pointer, while b is an int.

                  在 Stack Overflow 上至少有 5 个重复的问题讨论了这个问题的指针.但是引用呢?

                  There are at least 5 duplicate questions on Stack Overflow that discuss this issue for pointers. But what about references?



                  While researching for this question, I already found the answer:

                  & 需要像 * 一样编写.

                  The & needs to be written just like the *.


                  The demonstration code is similar to the pointer demonstration code:

                  int main() {
                      int a = 0;
                      int b = 1;
                      int& ar = a, br = b;
                      br = 2;
                      return b;

                  这返回 1,这意味着 ar 是一个 int 引用,而 br 只是一个整数.

                  This returns 1, which means that ar is an int reference, while br is just an integer.

                  这篇关于C++ 引用中 & 符号在语义上的准确位置是什么的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持跟版网!



                  C++ stl unordered_map implementation, reference validity(C++ stl unordered_map 实现,参考有效性)
                  C++: Is it possible to use a reference as the value in a map?(C++:是否可以使用引用作为映射中的值?)
                  Where ampersand quot;amp;quot; can be put when passing argument by reference?(其中符号“amp;通过引用传递参数时可以放置吗?)
                  Why can a non-const reference parameter be bound to a temporary object?(为什么可以将非常量引用参数绑定到临时对象?)
                  What is a dangling reference?(什么是悬空引用?)
                  C++ reference changes when push_back new element to std::vector(当 push_back 新元素到 std::vector 时,C++ 引用发生变化)

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