问题描述
我想定义一个结构,其中会存储一些数学常数。
现在我已经有了:
I want to define an structure, where some math constants would be stored.
Here what I've got now:
struct consts {
//salt density kg/m3
static const double gamma;
};
const double consts::gamma = 2350;
它工作正常,但会有超过10个浮点常数,因此我不想在每个人之前写static const。并定义如下:
It works fine, but there would be more than 10 floating point constants, so I doesn't want to wrote 'static const' before each of them. And define something like that:
static const struct consts {
//salt density kg/m3
double gamma;
};
const double consts::gamma = 2350;
看起来不错,但我遇到了这些错误:
1.成员函数不允许重新声明
2.非静态数据成员不能在其类之外定义
It look fine, but I got these errors:
1. member function redeclaration not allowed
2. a nonstatic data member may not be defined outside its class
我想知道是否有任何C ++方法? / p>
I wondering if there any C++ way to do it?
推荐答案
使用命名空间,而不是试图将结构体变成命名空间。
Use a namespace rather than trying to make a struct into a namespace.
namespace consts{
const double gamma = 2350;
}
访问数据的方法也有完全相同的synatx。例如:
The method of accessing the data also has exactly the same synatx. So for example:
double delta = 3 * consts::gamma;
这篇关于C ++中的静态结构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!