Question

在Arduino C ++中，我试图初始化一个2 dim字符数组。

在数组的每个第1级元素将是两个第二级元素，第一个是一个字符（加上假定的\ 0终止符），第二个是最多十九个字符（加上假定的\ 0终止符）。因此，每个第一级元素应该不超过二十二个字符 - 1（+1）+ 19（+1）。

我正在尝试：

char Mchar[][22] = {
{" ","0000000"},
{"A","10111"},
{"B","111010101"},
{"C","11101011101"},
{"D","1110101"},
{"E","1"},
{"F","101011101"},
{"G","111011101"},
{"H","1010101"},
{"I","101"},
{"J","1011101110111"},
{"K","111010111"},
{"L","101110101"},
{"M","1110111"},
{"N","11101"},
{"O","11101110111"},
{"P","10111011101"},
{"Q","1110111010111"},
{"R","1011101"},
{"S","10101"},
{"T","111"},
{"U","1010111"},
{"V","101010111"},
{"W","101110111"},
{"X","11101010111"},
{"Y","1110101110111"},
{"Z","11101110101"},
{"0","1110111011101110111"},
{"1","10111011101110111"},
{"2","101011101110111"},
{"3","1010101110111"},
{"4","10101010111"},
{"5","101010101"},
{"6","11101010101"},
{"7","1110111010101"},
{"8","111011101110101"},
{"9","11101110111011101"},
{".","10111010111010111"},
{","",1110111010101110111"},
{"?","101011101110101"},
{"'","1011101110111011101"},
{"!","1110101110101110111"},
{"/","1110101011101"},
{"(","111010111011101"},
{")","1110101110111010111"},
{"&","10111010101"},
{":","11101110111010101"},
{";","11101011101011101"},
{"=","1110101010111"},
{"+","1011101011101"},
{"-","111010101010111"},
{"_","10101110111010111"},
{"\"","101110101011101"},
{"$","10101011101010111"},
{"@","10111011101011101"}
};

毋庸置疑，它对我不起作用，反复出现错误行：

错误：'char [22]'
的初始化程序太多

有人会指出我的方式错误。

TIA

Answer 1

这个的初始化语法不清楚，可能是错误的，你试图初始化一个字符数组（一个字符串），其中包含两个单独字符串的大括号分隔列表（应该用于初始化一个数组（以及其他内容））字符串）。如果您有std::vector，std::string和std::pair可以访问

auto vec = std::vector<std::pair<char, std::string>>{
    {' ', "0000000"},
    {'A', "10111"},
    {'B', "111010101"},
    {'C', "11101011101"}
};

Answer 2

你拥有的是22个char数组的数组。这样就会给你一个字符串列表。但是你似乎想要一个字符串对列表。为此，我认为您需要3尺寸：

char Mchar[][2][22] = {
    {" ","0000000"},
    {"A","10111"},
    {"B","111010101"},
    {"C","11101011101"},
    {"D","1110101"},
    // ...
};

或者你可以像这样创建一对char const*的数组：

char const* Mchar[][2] = {
    {" ","0000000"},
    {"A","10111"},
    {"B","111010101"},
    {"C","11101011101"},
    {"D","1110101"},
    // ...
};

现在你的字符串可以是任意长度，因为你的数组只存储指向它们第一个元素的指针。

修改

在重新阅读这个问题时，你真正要求的是：

char Mchar[][22] = { {" 0000000"}, {"A10111"}, {"B111010101"}, {"C11101011101"}, {"D1110101"}, // ... };

C ++ Arduino - 初始化2D字符数组

2 个答案: