String.startsWith()

설명

스트링이 다른 스트링의 문자들로 시작하는지 아닌지 테스트

문법

myString.startsWith(myString2)

매개변수

  • myString, myString2: a variable of type String

반환값

  • myStringmyString2의 문자들로 시작하면 true를, 아니라면 false를 반환합니다

예제 코드

void setup() { Serial.begin(9600); String myString = "ArduinoGetStarted.com"; String myString2 = "Arduino"; if (myString.startsWith(myString2)) Serial.println("The string is started with Arduino"); else Serial.println("The string is NOT started with Arduino"); } void loop() { }

시리얼 모니터에 결과:

COM6
Send
The string is started with Arduino
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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