line follower.cpp

int mid = 0;
int mn = 0;
int mx = 0;
int totalAnalogPinInUse = 9; //Please specify the total number of pins you used for the IR array

void setup() {
  //put other setups
  
  //calibrating the sensors
for(int i = 0; i<5000; i++){
  digitalWrite(13, HIGH); //just to let you know the sensors are calibrating
  int val = 0;
  for(int j = 0; j<totalAnalogPinInUse; j++){
    val = analogRead(j);
    if (val>=mx){
      mx = val;
    }
    if (val <= mn){
      mn = val;
    }
  }
  delay(1);

}
  mid = ((mx + mn)/2);
  digitalWrite(13, LOW);
}

void loop() {
  // put your main code here, to run repeatedly:
  int s0 = 0;
  int s1 = 0;
  int s2 = 0;
  int s3 = 0;
  int s4 = 0;
  int s5 = 0;
  int s6 = 0;
  int s7 = 0;
  int s8 = 0;

  s0 = analogRead(0);
  s1 = analogRead(1);
  s2 = analogRead(2);
  s3 = analogRead(3);
  s4 = analogRead(4);
  s5 = analogRead(5);
  s6 = analogRead(6);
  s7 = analogRead(7);
  s8 = analogRead(8);


  delay(1);

  if((((s0+s1+s2+s3)/4) > ((s5+s6+s7+s8)/4))){
    //put your motor control code here. for moving right
  }
  if((((s0+s1+s2+s3)/4) < ((s5+s6+s7+s8)/4))){
    //put your motor control code here. for moving left
  }
  if ((s3+s4+s5)/3 > 500){
    //motor control for forward
  }
  if ((s3+s4+s5)/3 < mid){
    //motor control for stop
  }
}