Arduino get size of array

Arduino how to get array length

String myString = "text"; 					//make a stirng
int stringLength = myString.length(); 		//get length from string

Arduino get size of array

int ary[12];
int len = sizeof(ary)/sizeof(ary[0])

Source: forum.arduino.cc

Length of an array arduino

This program prints out a text string one character at a time. Try changing the text phrase.

char myStr[] = "this is a test";

void setup() {
  Serial.begin(9600);
}

void loop() {
  for (byte i = 0; i < sizeof(myStr) - 1; i++) {
    Serial.print(i, DEC);
    Serial.print(" = ");
    Serial.write(myStr[i]);
    Serial.println();
  }
  delay(5000);  // slow down the program
}

Source: arduino.cc

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