Sketch exit status 1 expected '(' before 'unsigned

Projects Programming
1

#define RELAY1 7 // On
#define RELAY2 8 // Off
#include <LiquidCrystal_I2C.h>
#include "DHT.h"
#define DHTPIN 2
#define DHTTYPE DHT22 // Temp
float h = 0, temperature = 0;
LiquidCrystal_I2C lcd = LiquidCrystal_I2C(0x27, 16, 2);
DHT dht(DHTPIN, DHTTYPE);
unsigned long previousMillis = 0; //Counter
const long interval = 1000; //Delay Time

void setup()
{
dht.begin(); // initialize the sensor
lcd.init(); // initialize the lcd
lcd.backlight(); // open the backlight
pinMode(RELAY1, OUTPUT);
pinMode(RELAY2, OUTPUT);

float humi = dht.readHumidity(); // read humidity
float tempC = dht.readTemperature(true); // read temperature

lcd.clear();
lcd.setCursor(0, 0); // start to print at the first row
lcd.print("Temp: ");
lcd.print(tempC); // print the temperature
lcd.print((char)223); // print ° character
lcd.print("C");

}

void loop()
{

if (temperature >= 24) { // Temp to HOT
digitalWrite(RELAY2, HIGH); // Triger Off Swith // Relay HIGH
digitalWrite(RELAY1, LOW); // Ideal

if
unsigned long currentMillis = millis(); // After a Few Sec move to relay LOW
(currentMillis - previousMillis >= interval
 previousMillis = currentMillis;

 (RELAY2 == HIGH)// Turn Relay to Low
 RELAY2 = LOW;



if (temperature >= 19) { // Temp to Low
digitalWrite(RELAY2, HIGH); // Triger On Switch
  digitalWrite(RELAY1, LOW); Ideal

  if
  unsigned long currentMillis = millis(); // After a Few Sec move to relay LOW
  (currentMillis - previousMillis >= interval
   previousMillis = currentMillis;

   (RELAY1 == HIGH) //Turn Relay to Low
   RELAY1 = LOW;


} else if (temperature < 20 && 23) { // Temp in Midle
digitalWrite(RELAY1, LOW); // Keep LOW
digitalWrite(RELAY2, LOW); // Keep LOW

}
}
Problem:exit status 1
expected '(' before 'unsigned'

It's to replace switch pad on pallet store

Thanks

2

Read the forum guidelines to see how to properly post code and information on how to get the most from this forum.
Use the IDE autoformat tool (ctrl-t or Tools, Auto format) before posting code in code tags.

Please include the entire error message. It is easy to do. There is a button (lower right of the IDE window) called "copy error message". Copy the error and paste into a post in code tags. Paraphrasing the error message leaves out important information.

3

Did you forget something there?

Then a bit later you copied the same thing.

The if structure syntax is shown here.

4

j see now, thanks