如何从 Arduino 中的字符串中删除空格？

Question

这里有人能告诉我如何去掉 String(a) 的空白！！

 String a = "GET /?led=21 HTTP/1.1";
 void setup() {
   Serial.begin(9600);
    Serial.print(a); 
  }
 void loop() {

 }

Answer 1

在 Arduino 中，您可以像这样修改现有字符串来替换字符串：

a.replace(" ", "");

Arduino Reference:

The String replace() function allows you to replace all instances of a given character with another character. You can also use replace to replace substrings of a String with a different substring.

如何从 Arduino 中的字符串中删除空格？

How to remove white spaces from String in Arduino?

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