String.setCharAt()

Description

Sets a character of the String. Has no effect on indices outside the existing length of the String.

Syntax

myString.setCharAt(index, c)

Parameter Values

  • myString: a variable of type String.
  • index: the index to set the character at.
  • c: the character to store to the given location.

Return Values

  • Nothing

Example Code

void setup() { Serial.begin(9600); String myString = "Arduino"; Serial.println(myString); // string before myString.setCharAt(0, 'B'); myString.setCharAt(6, 'Y'); Serial.println(myString); // string after } void loop() { }

The result on Serial Monitor:

COM6
Send
Arduino BrduinY
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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