title: Why is my code showing up these errors?
body: <p>The Error is:</p>
  
  <pre><code>Arduino: 1.8.5 (Windows 10), Board: "Arduino/Genuino Uno"
  
  C:\Users\User\Downloads\BLUETOOTH_CAR\BLUETOOTH_CAR.ino:1:21: fatal error: AFMotor.h: No such file or directory
  
   #include &lt;AFMotor.h&gt;
  
                       ^
  
  compilation terminated.
  
  exit status 1
  Error compiling for board Arduino/Genuino Uno.
  
  This report would have more information with
  "Show verbose output during compilation"
  option enabled in File -&gt; Preferences.
  </code></pre>
  
  <p>My code is:</p>
  
  <pre><code>#include &lt;AFMotor.h&gt;
  AF_DCMotor right_motor(1, MOTOR12_8KHZ);
  AF_DCMotor left_motor(2, MOTOR12_8KHZ);
  
  String readString;
  
  void setup() {
    Serial.begin(9600);
    right_motor.setSpeed(250);
    left_motor.setSpeed(250);
  }
  
  void loop() {
    while(Serial.available()){
      delay(50);
      char c=Serial.read();
      readString+=c;
    }
    if(readString.length()&gt;0){
      Serial.println(readString);
      if (readString =="FORWARD"){
        right_motor.run (FORWARD);
        left_motor.run (FORWARD);
        delay(500);
      }
      if (readString =="BACKWARD"){
        right_motor.run (BACKWARD);
        left_motor.run (BACKWARD);
        delay(500);
      }
      if (readString =="LEFT"){
        right_motor.run (FORWARD);
        left_motor.run (BACKWARD);
        delay(500);
      }
      if (readString =="RIGHT"){
        right_motor.run (BACKWARD);
        left_motor.run (FORWARD);
        delay(500);
      }
      if (readString =="STOP"){
        right_motor.run (RELEASE);
        left_motor.run (RELEASE);
        delay(500);
      }
  
      readString="";
    }
  }
  </code></pre>