String.concat()

설명

매개변수를 스트링에 더함.

문법

myString.concat(parameter)

매개변수

  • parameter: 허용되는 자료형 String, string, char, byte, int, unsigned int, long, unsigned long, float, double, FlashStringHelper(F() macro).

반환값

  • true: 성공
  • false: 실패 (이경우 스트링은 바뀌지 않음).

예제 코드

void setup() { Serial.begin(9600); String myString = "Arduino"; Serial.println(myString); // string before myString.concat("GetStarted.com"); Serial.println(myString); // string after } void loop() { }

시리얼 모니터에 결과:

Newbiely | Arduino IDE 2.3.8
──
File
Edit
Sketch
Tools
Help
Arduino Uno
Newbiely.ino
···
8 Serial.println("Hello World!");
Output
Serial Monitor
Message (Enter to send message to 'Arduino Uno' on 'COM15')
New Line
9600 baud
Arduino ArduinoGetStarted.com
Ln 11, Col 1
Arduino Uno on COM15
2

※ 주의 및 경고:

If the string is modified, it is highly recommended using String.reserve() to prevent the memory fragmentation issue

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Arduino UNO R3
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