C ++结构初始化 [英] C++ Structure Initialization

问题描述

可以使用C ++初始化结构，如下所示

Is it possible to initialize structs in C++ as indicated below

struct address {
                 int street_no;
                 char *street_name;
                 char *city;
                 char *prov;
                 char *postal_code;
               };
address temp_address =
               { .city = "Hamilton", .prov = "Ontario" };

链接此处和这里提到，可以只在C中使用这种风格。如果是这样为什么这不可能在C + +？是否有任何潜在的技术原因，为什么它不实现在C + +，或者是不好的做法，使用这种风格。我喜欢使用这种初始化方式，因为我的结构是大的，这种风格给我清楚的可读性分配给哪个成员的值。

The links here and here mention that it is possible to use this style only in C. If so why is this not possible in C++? Is there any underlying technical reason why it is not implemented in C++, or is it bad practice to use this style. I like using this way of initializing because my struct is big and this style gives me clear readability of what value is assigned to which member.

请与我分享，如果有

我在发布此问题之前引用了以下链接

I have referred the following links before posting this question

1. C / C ++ for AIX


2. C使用变量的结构初始化


3. 使用C ++中的标记进行静态结构初始化


4. C ++ 11正确的结构初始化

1. C/C++ for AIX
2. C Structure Initialization with Variable
3. Static structure initialization with tags in C++
4. C++11 Proper Structure Initialization

推荐答案

以清楚每个初始值设定值是什么，只是将它拆分成多行，并在每一行上加上注释：

If you want to make it clear what each initializer value is, just split it up on multiple lines, with a comment on each:

address temp_addres = {
  0,  // street_no
  nullptr,  // street_name
  "Hamilton",  // city
  "Ontario",  // prov
  nullptr,  // postal_code
};

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