在C ++中初始化一个const字符串的静态const数组 [英] Initializing a static const array of const strings in C++

问题描述

我无法初始化常量字符串的常数数组。

I am having trouble initializing a constant array of constant strings.

从week.h（仅显示相关部分）：

From week.h (showing only relevant parts):

class Week {
  private:
    static const char *const *days = { "mon", "tue", "wed", "thur",
                                       "fri", "sat", "sun" };
};

当我编译时，我得到错误标量初始化器中的多余元素。我试着让它类型const char **，认为我搞砸了第二个const的位置，但我有同样的错误。

When I compile I get the error "excess elements in scalar initializer". I tried making it type const char **, thinking I messed up the 2nd const placement, but I got the same error. What am I doing wrong?

推荐答案

首先，你需要一个数组，而不是指针。

First of all, you need an array, not a pointer.

static const char * const days[] = {"mon", "tue", "wed", "thur",
                                       "fri", "sat", "sun"};

其次，你不能直接在类定义内部初始化。 Iside类的定义，只留下：

Second of all, you can't initialize that directly inside the class definition. Iside the class definition, leave only this:

static const char * const days[]; //declaration

然后，在.cpp文件中写入定义

Then, in the .cpp file, write the definition

const char * const Week::days[] = {"mon", "tue", "wed", "thur",
                                       "fri", "sat", "sun"};

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