Floor mopper

1void setup()
2{
3Serial.begin(9600);
4pinMode(13, OUTPUT);//dc motor
5pinMode(11,OUTPUT);
6  pinMode(12,OUTPUT);
7  digitalWrite(13, HIGH);
8}
9void loop()
10{
11if(Serial.available()  > 0)
12{
13char data= Serial.read();
14Serial.print(data);
15Serial.println(data);
16if(data  == 'a')
17{digitalWrite(13, HIGH);
18digitalWrite(11, LOW) ;
19}
20else if(data  == 'b')
21{digitalWrite(13, LOW);
22digitalWrite(11, HIGH) ;
23}
24else if(data=='c')
25{digitalWrite(13,  HIGH) ;
26digitalWrite(11, HIGH) ;}
27else{
28digitalWrite(13, LOW) ;
29digitalWrite(11,  LOW) ;
30}
31}
32}