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String.toCharArray()
Description
Copies the String's characters to the supplied buffer.
Syntax
myString.toCharArray(buf, len)
Parameter Values
- myString: a variable of type String.
- buf: the buffer to copy the characters into. Allowed data types: array of char.
- len: the size of the buffer. Allowed data types: unsigned int.
Return Values
- Nothing
Example Code
void setup() {
Serial.begin(9600);
String myString = "Arduino";
byte buffer[myString.length() + 1];
myString.toCharArray(buffer, myString.length() + 1);
for (int i = 0; i < myString.length() + 1; i++)
Serial.println(buffer[i], HEX);
}
void loop() {
}
The result on Serial Monitor:
COM6
41
72
64
75
69
6E
6F
0
Autoscroll
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
- Language : Arduino - String
- Language : String.c_str()
- Language : String.charAt()
- Language : String.compareTo()
- Language : String.concat()
- Language : String.endsWith()
- Language : String.equals()
- Language : String.equalsIgnoreCase()
- Language : String.getBytes()
- Language : String.indexOf()
- Language : String.lastIndexOf()
- Language : String.length()
- Language : String.remove()
- Language : String.replace()
- Language : String.reserve()
- Language : String.setCharAt()
- Language : String.startsWith()
- Language : String.substring()
- Language : String.toDouble()
- Language : String.toFloat()
- Language : String.toInt()
- Language : String.toLowerCase()
- Language : String.toUpperCase()
- Language : String.trim()
- Example : String Tutorials
※ ARDUINO BUY RECOMMENDATION
| Arduino UNO R3 | |
| Arduino Starter Kit |
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