DHT.h:no such file or directoryと出ます。何かまちがっていますか？

#include <Wire.h>　　
#include"RTClib.h"
#include"DHT.h"

const int RTC_5V_PIN=A3;
const int RTC_GND_PIN=A2;

const int DHT_PIN=2;
const int WATER_VALVE_0_PIN=13;
const int WATER_VALVE_1_PIN=7;
const int WATER_VALVE_2_PIN=4;
const int NUMBEROFVALVES=3;
const int NUMBEROFTIMES=2;

int onOffTimes[NUMBEROFVALVES][NUMBEROFTIMES];

const int ONTIME=0;
const int OFFTIME=1;

int valvePinNumbers[NUMBEROFVALVES]

#define DHTTYPE DHT11;
DHT dht(DHT_PIN,DHTTYPE);
RTC_DS1307 rtc;　　　　

DateTime dataTimeNow;
float humidityNow;

void setup() {
Wire.begin();
rtc.begin();
dht.begin();
Serial.begin(9600);

valvePinNumbers[0]=WATER_VALVE_0_PIN;
valvePinNumbers[1]=WATER_VALVE_1_PIN;
valvePinNumbers[2]=WATER_VALVE_2_PIN;

for(int valve=0; valve<NUMBEROFVALVES; valve++){
pinMode(valvePinNumbers[valve],OUTPUT);
}
}

void loop() {

Serial.println("Type 'p' or 'S2N13:45'");

getTimeTempHumidity();

checkUserInteraction();

checkTimeControlValves();

delay(5000);
}

void getTimeTempHumidity(){

dataTimeNow=rtc.now();
if(!rtc.isrunning()){
Serial.println("RTC is NOT running");
return;
}
Serial.print(dateTimeNow.hour(),DEC);
Serial.print(':');
Serial.print(detaTimeNow.minute(),DEC);
Serial.print(':');
Serial.print(detaTimeNow.second(),DEC);

humidityNow=dht.readHumidity();
float t=dht.readTemperature(); //摂氏
float f=dht.readTemperature(true); //華氏

if(isnan(humidityNow)||isnan(t)||isnan(f)){
Serial.println("Failde to read from DHT sensor!");
return;
}

Serial.print("Humidity");
Serial.print(humidityNow);
Serial.print("% ");
Serial.print("Temp ");
Serial.print(t);
Serial.print("c ");
Serial.print(f);
Serial.print("F ");
Serial.println();
}

void checkUserInteraction(){
while(Serial.available>0){

char temp=Serial.read();

if(temp=='p'){
  printSettings();
  Serial.flush();
  break;
}

else if(temp=='S'){
  expectValveSetting();
}

else{
  printMenu();
  Serial.flush();
  break;
}
}

}

void expectValveSetting(){

int valveNumber=Serial.parseInt();

char onOff=Serial.read();

int desiredHour=Serial.parseInt();

if(Serial.read()!=':'){
Serial.println("no:found");
Serial.flush();
return;
}

int desireMinutes=Serial.parseInt();

if(Serial.read()!='\n'){
Serial.println("Make sure to end your request with a Newline");
Serial.flush();
return;

}

int desireMinutesSinceMidnight=(desirdHour*60+desiredMinutes);

if(onOff=='N'){
onOffTimes[valveNumber][ONTIME]=desireMinutesSinceMidnight;
}
else if(onOff=='F'){
onOffTimes[valveNumber][OFFTIME]=desireMinutesSinceMidnight;
}
else{
Serial.println("you must use upper case N or F to indicate ON time or OFF time");
Serial.flush();
return;
}
printSettings();
}

void checkTimeControlValves(){

int nowMinutesSinceMidnight=(dateTimeNow.hour()*60+dateTimeNow.minute();

for(int valve=0; valve<NUMBEROFVALVES; valve++){
Serial.print("Valve");
Serial.print(valve);
Serial.print(" is now");

if((nowMinutesSinceMidnight>=onOffTimes[valveNumber][ONTIME])&&(nowMinutesSinceMidnight<onOffTimes[valveNumber][OFFTIME])){

  
  if(humidityNow>80){
    Serial.print("OFF");
    digitalWrite(valvePinNumbers[valve],LOW);
  }
  else{
    Serial.print("ON");
    digitalWrite(valvePinNumbers[valve],HIGH);
  }
}
else{
  Serial.print("OFF");
  digitalWrite(valvePinNumbers[valve],LOW);
}
Serial.println();

}

Serial.println();
}

void printSettings();
Serial.println();
for(int valve=0; valve<NUMBEROFVALVES; valve++){
Serial.print("Valve ");
Serial.print(valve);
Serial.print(" will turn ON at ");

Serial.print((onOFFtime[valve][ONTIME])/60);
Serial.print(":");
Serial.print((onOFFtime[valve][ONTIME]%60));
Serial.print(" and will turn OFF at ");
Serial.print((onOFFtime[valve][OFFTIME])/60);
Serial.print(";");
Serial.print((onOFFtime[valve][OFFTIME]%60));
Serial.println();
}
}

void printMenu(){
Serial.println("Please enter P to print the current settintgs");
Serial.println("Please enter S2N13:45 to set valve 2 ON time to 13:34");
}