Real time Automated smart sensor city

1int mqsen = 2; int buz = 3; int ir_bulb = 8; int relay = 9; int led =  13; int sensorPin = A0;    // select the input pin for the potentiometer int sensorValue  = 0;  // variable to store the value coming from the sensor int output_value; 
2  
3void setup() 
4{ 
5  pinMode(mqsen , INPUT);   pinMode(buz, OUTPUT);   pinMode(ir_bulb  , INPUT);   pinMode(relay, OUTPUT);   Serial.begin(9600);   pinMode(led, OUTPUT);  
6 
7} 
8 
9void loop() 
10{ 
11  if ( digitalRead( mqsen ) ) 
12  {  
13    digitalWrite(buz, HIGH);     delay(5000);     digitalWrite(buz, !HIGH);  
14  } 
15 
16   
17  if ( digitalRead( ir_bulb ) ) 
18  { 
19    digitalWrite(relay,  HIGH);     delay(5000);     digitalWrite(relay, !HIGH); 
20  } 
21  sensorValue  = analogRead(sensorPin);   output_value = map(sensorValue, 1023, 0, 0, 100); 
22  Serial.print("sensor = " );   Serial.print(output_value);   Serial.println("%");   if ( output_value < 20) 
23  { 
24    digitalWrite(led, HIGH);     delay(5000);     digitalWrite(led, !HIGH); 
25  } 
26} 
27

1int mqsen = 2; int buz = 3; int ir_bulb = 8; int relay = 9; int led =
2  13; int sensorPin = A0;    // select the input pin for the potentiometer int sensorValue
3  = 0;  // variable to store the value coming from the sensor int output_value; 
4
5  
6void setup() 
7{ 
8  pinMode(mqsen , INPUT);   pinMode(buz, OUTPUT);   pinMode(ir_bulb
9  , INPUT);   pinMode(relay, OUTPUT);   Serial.begin(9600);   pinMode(led, OUTPUT);
10  
11 
12} 
13 
14void loop() 
15{ 
16  if ( digitalRead( mqsen ) ) 
17  {
18  
19    digitalWrite(buz, HIGH);     delay(5000);     digitalWrite(buz, !HIGH);
20  
21  } 
22 
23   
24  if ( digitalRead( ir_bulb ) ) 
25  { 
26    digitalWrite(relay,
27  HIGH);     delay(5000);     digitalWrite(relay, !HIGH); 
28  } 
29  sensorValue
30  = analogRead(sensorPin);   output_value = map(sensorValue, 1023, 0, 0, 100); 
31
32  Serial.print("sensor = " );   Serial.print(output_value);   Serial.println("%");
33   if ( output_value < 20) 
34  { 
35    digitalWrite(led, HIGH);     delay(5000);
36     digitalWrite(led, !HIGH); 
37  } 
38} 
39