Robolink Rodeo line tracking sensor test

rodeoLineTrackerTest.ino

//Robolink Rodeo line tracking sensor test. https://www.youtube.com/watch?v=er_i-MaEoKU
//Rodeo robot purchase link: https://www.robolinkmarket.com/arama?q=rodeo
const int lineSensorLeft = A0;
const int lineSensorMiddle = A1;
const int lineSensorRight = A2;

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

bool isWhite(int val) {
  return val < 200;
}

void printVal(char* str, int val) {
  Serial.print(str);
  Serial.print(" = ");
  Serial.print(val);
  Serial.print(", ");
  isWhite(val) ? Serial.print("white. ") : Serial.print("black. ");
}

void loop() {  
  int sensorLeftVal = analogRead(lineSensorLeft);  
  printVal("sensorLeftVal", sensorLeftVal);
  int sensorMiddleVal = analogRead(lineSensorMiddle);  
  printVal("sensorMiddleVal", sensorMiddleVal);
  int sensorRightVal = analogRead(lineSensorRight);
  printVal("sensorRightVal", sensorRightVal);
  Serial.println();
}