String.equalsIgnoreCase()

Description

Compares two Strings for equality. The comparison is not case-sensitive, meaning the String("hello") is equal to the String("HELLO").

Syntax

myString.equalsIgnoreCase(myString2)

Parameter Values

  • myString: variable of type String.
  • myString2: variable of type String.

Return Values

  • true: If myString equals myString2 (ignoring case).
  • false: Otherwise.

Example Code

void setup() { Serial.begin(9600); String myString = "Arduino"; if (myString.equalsIgnoreCase("ARDUINO")) Serial.println("Two strings is equal to each other"); else Serial.println("Two strings is NOT equal to each other"); } void loop() { }

The result on Serial Monitor:

COM6
Send
Two strings is equal to each other
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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