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Arduino示例代码讲解：String replace() 字符串替换

news 来源：原创 2025/5/23 6:58:21

Arduino示例代码讲解：String replace字符串替换

String replace() 字符串替换
- 代码功能概述
- - - 功能：
    - 硬件要求：
    - 输出：
- 代码结构
- - - `setup()` 函数
    - `loop()` 函数
    - 替换子字符串：
    - 替换单个字符：
    - 无限循环：
- 运行过程
- 输出结果解释
- - - 原始字符串：
    - 替换后的字符串：
    - 原始字符串：
    - 替换后的字符串：
- 注意事项

String replace() 字符串替换

/*
  String replace()

 Examples of how to replace characters or substrings of a string

 created 27 July 2010
 modified 2 Apr 2012
 by Tom Igoe

 http://arduino.cc/en/Tutorial/StringReplace

 This example code is in the public domain.
 */

void setup() {
   
  // Open serial communications and wait for port to open:
  Serial.begin(9600);
  while (!Serial) {
   
    ; // wait for serial port to connect. Needed for Leonardo only
  }

  // send an intro:
  Serial.println("\n\nString  replace:\n");
  Serial.println();
}

void loop() {
   
  String stringOne = "<html><head><body>";
  Serial.println(stringOne);
  // replace() changes all instances of one substring with another:
  // first, make a copy of th original string:
  String stringTwo = stringOne;
  // then perform the replacements:
  stringTwo.replace("<", "</");