const int sensorpin1=3;
const int sensorpin2=4;
const int mot1A = 7;
const int mot1B = 8;
const int mot2A = 5;
const int mot2B = 6;

int sense1 = 0;
int sense2 = 0;

void botForward(){
  digitalWrite(mot1A, HIGH);
  digitalWrite(mot1B, LOW);
  digitalWrite(mot2A, HIGH);
  digitalWrite(mot2B, LOW);
}

void botBackward(){
  digitalWrite(mot1A, 0);
  digitalWrite(mot1B, 1);
  digitalWrite(mot2A, 0);
  digitalWrite(mot2B, 1);
}

void botTurnLeft(){
  digitalWrite(mot1A, 0);
  digitalWrite(mot1B, 1);
  digitalWrite(mot2A, 1);
  digitalWrite(mot2B, 0);
}

void botTurnRight(){
  digitalWrite(mot1A, 1);
  digitalWrite(mot1B, 0);
  digitalWrite(mot2A, 0);
  digitalWrite(mot2B, 1);
}


void botStop(){
  digitalWrite(mot1A, 0);
  digitalWrite(mot1B, 0);
  digitalWrite(mot2A, 0);
  digitalWrite(mot2B, 0);
}

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(sensorpin1, INPUT);
  pinMode(sensorpin2, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  // Serial.print("sensor 1 : ");
  // Serial.println(digitalRead(sensorpin1));

  // Serial.print("sensor 2 : ");
  // Serial.println(digitalRead(sensorpin2));


  sense1 = digitalRead(3);
  sense2 = digitalRead(4);
  if(sense1 && sense2){
    botForward();
  }else if((sense1)){
    botTurnRight();
  }else if(sense2){
    botTurnLeft();
  }else{
    botBackward();
  }
}