String.toUpperCase()

설명

대문자 버전 스트링을 얻는다. 1.0 부터, toUpperCase() 는 새 스트링을 반환하는 대신 스트링을 바꾼다.

문법

myString.toUpperCase()

매개변수

  • myString: 스트링 형 변수

반환값

  • 없음

예제 코드

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

시리얼 모니터에 결과:

COM6
Send
ArduinoGetStarted.com ARDUINOGETSTARTED.COM
Autoscroll Show timestamp
Clear output
9600 baud  
Newline  

※ 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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