Pega lo que tengas copiado en el portapapeles

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#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,20,4);
#define dht_dpin A0
byte bGlobalErr;
byte dht_dat[5];
void setup(){
InitDHT();
lcd.init();
lcd.init();
Serial.begin(9600);
delay(300);
Serial.println("Humedad y temperatura");
delay(700);
}
void loop(){
lcd.backlight();
ReadDHT();
switch (bGlobalErr){
case 0:
lcd.setCursor(0,0);
lcd.print("Humedad relativa = ");
lcd.setCursor(0,1);
lcd.print(dht_dat[0], DEC);
lcd.setCursor(2,1);
lcd.print(".");
lcd.setCursor(3,1);
lcd.print(dht_dat[1], DEC);
lcd.setCursor(5,1);
lcd.print("%");
lcd.setCursor(0,2);
lcd.print("Temperatura = ");
lcd.setCursor(0,3);
lcd.print(dht_dat[2], DEC);
lcd.setCursor(2,3);
lcd.print(".");
lcd.setCursor(3,3);
lcd.print(dht_dat[3], DEC);
lcd.setCursor(5,3);
lcd.print("C");
break;
}
delay(800);
}
void InitDHT(){
pinMode(dht_dpin,OUTPUT);
digitalWrite(dht_dpin,HIGH);
}
void ReadDHT(){
bGlobalErr=0;
byte dht_in;
byte i;
digitalWrite(dht_dpin,LOW);
delay(20);
digitalWrite(dht_dpin,HIGH);
delayMicroseconds(40);
pinMode(dht_dpin,INPUT);
//delayMicroseconds(40);
dht_in=digitalRead(dht_dpin);
if(dht_in){
bGlobalErr=1;
return;
}
delayMicroseconds(80);
dht_in=digitalRead(dht_dpin);
if(!dht_in){
bGlobalErr=2;
return;
}
delayMicroseconds(80);
for (i=0; i<5; i++)
dht_dat[i] = read_dht_dat();
pinMode(dht_dpin,OUTPUT);
digitalWrite(dht_dpin,HIGH);
byte dht_check_sum =
dht_dat[0]+dht_dat[1]+dht_dat[2]+dht_dat[3];
if(dht_dat[4]!= dht_check_sum)
{bGlobalErr=3;}
};
byte read_dht_dat(){
byte i = 0;
byte result=0;
for(i=0; i< 8; i++){
while(digitalRead(dht_dpin)==LOW);
delayMicroseconds(30);
if (digitalRead(dht_dpin)==HIGH)
result |=(1<<(7-i));
while (digitalRead(dht_dpin)==HIGH);
}
return result;
}