#include <DHT.h>  // Include the DHT library 
#define DHTPIN 7 // Pin connected to DHT11 Data 
#define DHTTYPE DHT11     // Define the DHT sensor type 
#define BUTTON_PIN 2      // Pin connected to Push Button 
#define LED_PIN 13
DHT dht(DHTPIN, DHTTYPE); // Initialize DHT sensor 
void setup() { 
Serial.begin(9600);  // Start serial communication for displaying data on Serial Monitor 
pinMode(BUTTON_PIN, INPUT);  // Set button pin as input 
dht.begin();  // Initialize the DHT sensor 
} 
void loop() { 
int buttonState = digitalRead(BUTTON_PIN);  // Read the state of the button 
if (buttonState == HIGH) { 
digitalWrite(LED_PIN, HIGH);  // Turn on the LED when button is pressed 
} else { 
digitalWrite(LED_PIN, LOW);   // Turn off the LED when button is not pressed 
} 
// Read temperature and humidity from the DHT11 sensor 
float humidity = dht.readHumidity(); 
float temperature = dht.readTemperature(); 
// Check if the sensor readings are valid 
if (isnan(humidity) || isnan(temperature)) { 
Serial.println("Failed to read from DHT sensor!"); 
} else { 
// Print the temperature and humidity to the Serial Monitor 
Serial.print("Temperature: "); 
Serial.print(temperature); 
Serial.print(" °C\t"); 
Serial.print("Humidity: "); 
Serial.print(humidity); 
Serial.println(" %"); 
} 
delay(2000);  // Wait 2 seconds before the next loop iteration 
}