字符串为const char *在Arduino的？ [英] String to const char* in Arduino?

问题描述

我有一个变量鸣叫这是一个字符串，它在一开始，我想剪掉一个字符。

I have a variable tweet that is a string and it has a character at the very beginning that I want to clip off.

所以，我想要做的就是使用的strstr（）将其删除。这里是我的code：

So what I want to do is use strstr() to remove it. Here's my code:

tweet = strstr(tweet, "]");

不过，我得到这个错误：

However, I get this error:

cannot convert 'String' to 'const char*' for argument '1' to 
'char' strstr(const char*, const char*)

所以，我认为将是转换鸣叫成一个字符。我将如何去这样做？

So my thought would be to convert tweet into a char. How would I go about doing so?

推荐答案

如何使用串来代替。这将是不同于字符串类型之间的转换不易混淆。

How about you use substring instead. This will be less confusing than converting between different types of string.

<一个href=\"http://arduino.cc/en/Reference/StringSubstring\">http://arduino.cc/en/Reference/StringSubstring

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