isSpace()

Description

Check if a character is a white-space character or not. Returns true if the character is :

  • A space (' ')
  • Form feed ('\f')
  • Newline ('\n')
  • Carriage return ('\r')
  • Horizontal tab ('\t')
  • Vertical tab ('\v').

Syntax

isSpace(thisChar)

Parameter Values

  • thisChar: variable. Allowed data types: char.

Return Values

  • true: If thisChar is a white-space character.
  • false: Otherwise

Example Code

char myChar; void setup() { Serial.begin(9600); // myChar = ' '; // myChar = '\f'; // myChar = '\n'; // myChar = '\r'; myChar = '\t'; // myChar = '\v'; Serial.print(myChar); Serial.print(": "); if (isSpace(myChar)) // tests if myChar is a white-space character Serial.println("The character is white-space"); else Serial.println("The character is not white-space"); myChar = 'A'; Serial.print(myChar); Serial.print(": "); if (isSpace(myChar)) // tests if myChar is a white-space character Serial.println("The character is white-space"); else Serial.println("The character is not white-space"); } void loop() {}

The result in Serial Monitor:

COM6
Send
: The character is white-space A: The character is not white-space
Autoscroll Show timestamp
Clear output
9600 baud  
Newline  

See Also

ARDUINO BUY RECOMMENDATION

Arduino UNO R3
Arduino Starter Kit
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