如何在 C++ 中初始化结构数组? [英] How to initialize an array of struct in C++?

问题描述

我的 C++ 代码中有以下 struct(我使用的是 Visual Studio 2010):

I have the following struct in my C++ code (I am using Visual Studio 2010):

struct mydata
{
    string scientist;
    double value;
};

我想做的是能够以快速的方式初始化它们，类似于 C99 中的数组初始化或 C# 中的类初始化，一些á la:

What I would like to do is to be able to initialize them in a quick way, similar to array initialization in C99 or class initialization in C#, something á la:

mydata data[] = { { scientist = "Archimedes", value = 2.12 }, 
                  { scientist = "Vitruvius", value = 4.49 } } ;

如果这在 C++ 中无法用于结构数组，我可以为对象数组执行此操作吗?换句话说，数组的底层数据类型并不那么重要，重要的是我有一个数组，而不是一个列表，并且我可以这样编写初始化器.

If this is not possible in C++ for an array of structs, can I do it for an array of objects? In other words, the underlying data type for an array isn't that important, it is important that I have an array, not a list, and that I can write initializers this way.

推荐答案

C++ 中的语法几乎完全相同(只是省略了命名参数):

The syntax in C++ is almost exactly the same (just leave out the named parameters):

mydata data[] = { { "Archimedes", 2.12 }, 
                  { "Vitruvius", 4.49 } } ;

在 C++03 中，只要数组类型是 聚合.在 C++11 中，这适用于任何具有适当构造函数的对象.

In C++03 this works whenever the array-type is an aggregate. In C++11 this works with any object that has an appropriate constructor.

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