This page is also available in 2 other languages

Change language

English

The Arduino Reference text is licensed under a Creative Commons Attribution-Share Alike 3.0 License.

Find anything that can be improved? Suggest corrections and new documentation via GitHub.

Doubts on how to use Github? Learn everything you need to know in this tutorial.

Last Revision: Searching...

Last Build: 2024/04/19

Reference > Language > Functions > Characters > Islowercase

isLowerCase()

[Characters]

Description

Analyse if a char is lower case (that is a letter in lower case). Returns true if thisChar contains a letter in lower case.

Syntax

isLowerCase(thisChar)

Parameters

thisChar: variable. Allowed data types: char.

Returns

true: if thisChar is lower case.

Example Code

if (isLowerCase(myChar)) {  // tests if myChar is a lower case letter
  Serial.println("The character is lower case");
}
else {
  Serial.println("The character is not lower case");
}

See also