Radar or Sonar - Which One Is Correct?

1#include <Servo.h>. 
2
3const int trigPin = 10;
4const int echoPin  = 11;
5
6long duration;
7int distance;
8Servo myServo; 
9void setup()  {
10  pinMode(trigPin, OUTPUT); 
11  pinMode(echoPin, INPUT); 
12  Serial.begin(9600);
13  myServo.attach(12); 
14}
15void loop() {
16
17  for(int i=15;i<=165;i++){  
18  myServo.write(i);
19  delay(30);
20  distance = calculateDistance();/
21  
22  Serial.print(i); 
23  Serial.print(","); 
24  Serial.print(distance);  
25  Serial.print("."); 
26  }
27
28  for(int i=165;i>15;i--){  
29  myServo.write(i);
30  delay(30);
31  distance = calculateDistance();
32  Serial.print(i);
33  Serial.print(",");
34  Serial.print(distance);
35  Serial.print(".");
36  }
37}
38
39int calculateDistance(){  
40  
41  digitalWrite(trigPin, LOW); 
42  delayMicroseconds(2);
43
44  digitalWrite(trigPin,  HIGH); 
45  delayMicroseconds(10);
46  digitalWrite(trigPin, LOW);
47  duration  = pulseIn(echoPin, HIGH); 
48  
49  distance= duration*0.034/2;
50  return distance;
51}

1#include <Servo.h>. 
2
3const int trigPin = 10;
4const int echoPin
5  = 11;
6
7long duration;
8int distance;
9Servo myServo; 
10void setup()
11  {
12  pinMode(trigPin, OUTPUT); 
13  pinMode(echoPin, INPUT); 
14  Serial.begin(9600);
15
16  myServo.attach(12); 
17}
18void loop() {
19
20  for(int i=15;i<=165;i++){
21  
22  myServo.write(i);
23  delay(30);
24  distance = calculateDistance();/
25
26  
27  Serial.print(i); 
28  Serial.print(","); 
29  Serial.print(distance);
30  
31  Serial.print("."); 
32  }
33
34  for(int i=165;i>15;i--){  
35  myServo.write(i);
36
37  delay(30);
38  distance = calculateDistance();
39  Serial.print(i);
40  Serial.print(",");
41
42  Serial.print(distance);
43  Serial.print(".");
44  }
45}
46
47int calculateDistance(){
48  
49  
50  digitalWrite(trigPin, LOW); 
51  delayMicroseconds(2);
52
53  digitalWrite(trigPin,
54  HIGH); 
55  delayMicroseconds(10);
56  digitalWrite(trigPin, LOW);
57  duration
58  = pulseIn(echoPin, HIGH); 
59  
60  distance= duration*0.034/2;
61  return distance;
62}