code error

i working on automating humidifier arduino projects site. code given seems have error. can me fix it? (i'm no @ programming.)

code: [select]

#include <dht.h>

#include <liquidcrystal.h>

// include library code:
#include <liquidcrystal.h>
#include "dht.h"

// set dht pin
#define dhtpin 8

// initialize library numbers of interface pins
liquidcrystal lcd(12, 11, 5, 4, 3, 2);
#define dhttype dht11
dht (dhtpin, dhttype);

void setup() {
  // set lcd's number of columns , rows:
  lcd.begin(16, 2);
  dht.begin();
  
  // print message lcd.
  lcd.print("temp:  humidity:");
}

void loop() {
  delay(500);
  // set cursor column 0, line 1
  // (note: line 1 second row, since counting begins 0):
  lcd.setcursor(0, 1);
  // read humidity
  float h = dht.readhumidity();
  //read temperature in fahrenheit
  float f = dht.readtemperature(true);

  if (isnan(h) || isnan(f)) {
    lcd.print("error");
    return;
  }

  lcd.print(f);
  lcd.setcursor(7,1);
  lcd.print(h);  
}


sketch_aug26b:15: error: expected constructor, destructor, or type conversion before '(' token

dht (dhtpin, dhttype);

   ^

c:\users\user\documents\arduino\sketch_aug26b\sketch_aug26b.ino: in function 'void setup()':

sketch_aug26b:20: error: expected unqualified-id before '.' token

 dht.begin();

    ^

c:\users\user\documents\arduino\sketch_aug26b\sketch_aug26b.ino: in function 'void loop()':

sketch_aug26b:32: error: expected primary-expression before '.' token

 float h = dht.readhumidity();

              ^

sketch_aug26b:34: error: expected primary-expression before '.' token

 float f = dht.readtemperature(true);

              ^

using library dhtlib in folder: c:\users\user\documents\arduino\libraries\dhtlib (legacy)
using library liquidcrystal @ version 1.0.5 in folder: c:\users\user\downloads\arduino-1.6.10-windows (1)\arduino-1.6.10\libraries\liquidcrystal
exit status 1
expected constructor, destructor, or type conversion before '(' token

you run dht () function out of main functions (setup or loop). not allowed. put in setup instead.

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