LED, touch sensor and servo motor

1#include <Servo.h>
2
3Servo myservo;
4
5int pos = 0; 
6int in  = 2; 
7int out = 13;  
8int state = HIGH;  
9int r;           
10int p =  LOW;    
11long time = 0;       
12long debounce = 200;   
13void setup()
14{
15  myservo.attach(9); 
16  pinMode(in, INPUT);
17  pinMode(out, OUTPUT);
18}
19void  loop()
20{
21  r = digitalRead(in);
22  if (r == HIGH && p == LOW && millis()  - time > debounce) {
23    for (pos = 0; pos <= 180; pos += 1) { // goes from 0  degrees to 180 degrees
24    // in steps of 1 degree
25    myservo.write(pos);              // tell servo to go to position in variable 'pos'
26    delay(5);                       // waits 15ms for the servo to reach the position
27  }
28  for (pos = 180; pos >= 0; pos -= 1) { // goes from 180 degrees to 0 degrees
29    myservo.write(pos);              // tell servo to go to position in variable  'pos'
30    delay(5);                       // waits 15ms for the servo to reach  the position
31  }
32    if (state == HIGH)
33      state = LOW;
34    else  
35      state = HIGH;
36    time = millis();    
37  }
38  digitalWrite(out,  state);
39  p = r;
40}