String.startsWith()

Description

Check whether or not a String starts with the characters of another String.

Syntax

myString.startsWith(myString2)

Parameter Values

  • myString, myString2: a variable of type String.

Return Values

  • true: If myString starts with the characters of myString2.
  • false: Otherwise.

Example Code

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() { }

The result on Serial Monitor:

COM6
Send
The string is started with Arduino
Autoscroll Show timestamp
Clear output
9600 baud  
Newline  

※ NOTES AND WARNINGS:

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

See Also

ARDUINO BUY RECOMMENDATION

Arduino UNO R3
Arduino Starter Kit
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