Clap switch using Arduino

1int soundsensor = 7;
2int relay = 6;
3
4int clap = 0;
5long detection_range_start  = 0;
6long detection_range = 0;
7boolean status_lights = false;
8 
9void  setup() {
10  pinMode(soundsensor, INPUT);
11  pinMode(relay, OUTPUT);
12}
13  
14void loop() {
15  int status_sensor = digitalRead(soundsensor);
16  if (status_sensor  == 0)
17  {
18    if (clap == 0)
19    {
20      detection_range_start = detection_range  = millis();
21      clap++;
22    }
23    else if (clap > 0 && millis()-detection_range  >= 50)
24    {
25      detection_range = millis();
26      clap++;
27    }
28  }
29  if (millis()-detection_range_start >= 400)
30  {
31    if (clap == 2)
32    {
33      if (!status_lights)
34        {
35          status_lights = true;
36          digitalWrite(relay, HIGH);
37        }
38        else if (status_lights)
39        {
40          status_lights = false;
41          digitalWrite(relay, LOW);
42        }
43    }
44    clap = 0;
45  }
46}

1int soundsensor = 7;
2int relay = 6;
3
4int clap = 0;
5long detection_range_start
6  = 0;
7long detection_range = 0;
8boolean status_lights = false;
9 
10void
11  setup() {
12  pinMode(soundsensor, INPUT);
13  pinMode(relay, OUTPUT);
14}
15
16  
17void loop() {
18  int status_sensor = digitalRead(soundsensor);
19  if (status_sensor
20  == 0)
21  {
22    if (clap == 0)
23    {
24      detection_range_start = detection_range
25  = millis();
26      clap++;
27    }
28    else if (clap > 0 && millis()-detection_range
29  >= 50)
30    {
31      detection_range = millis();
32      clap++;
33    }
34
35  }
36  if (millis()-detection_range_start >= 400)
37  {
38    if (clap == 2)
39
40    {
41      if (!status_lights)
42        {
43          status_lights = true;
44
45          digitalWrite(relay, HIGH);
46        }
47        else if (status_lights)
48
49        {
50          status_lights = false;
51          digitalWrite(relay, LOW);
52
53        }
54    }
55    clap = 0;
56  }
57}