exit status 1 expression cannot be used as a function

I have made my first code and it says “exit status 1 expression cannot be used as a function”. What should I do?
PS. The LCD screen is printing a Turkish sentence. There were not all the characters so I made my own letters.

 #include <LiquidCrystal.h>
 LiquidCrystal lcd(12,11,5,4,3,2);
 byte noktalic[8] = //ç harfini tanımlıyoruz
  { B00000,
    B01110,
    B10001,
    B10000,
    B10001,
    B01110,
    B00100,
    B00000, };
 byte buyuki[8] = //büyük i harfini tanimliyoruz
  { B00100,
    B00000,
    B11111,
    B00100,
    B00100,
    B00100,
    B00100,
    B11111, };

 byte noktasizi[8] = //ı harfini tanımlıyoruz
  { B00000,
    B00000,
    B01100,
    B00100,
    B00100,
    B00100,
    B01110, };
     
  int PiButton = A0;
  int PcButton = A1; 
  int PiGreenLed = 9;
  int PiRedLed = 10;
  int PcGreenLed = 8;
  int PcRedLed = 7;
  int PiRelay = 6;
  int PcRelay = 13;
  
void setup() {
pinMode(PiButton,INPUT);
pinMode(PcButton,INPUT);
pinMode(PiGreenLed,OUTPUT);
pinMode(PiRedLed,OUTPUT);
pinMode(PcGreenLed,OUTPUT);
pinMode(PcRedLed,OUTPUT);

lcd.begin(16,2);
lcd.clear();
lcd.createChar(1,noktalic);
lcd.createChar(2,buyuki);
lcd.createChar(3,noktasizi);
lcd.setCursor(4,0);
lcd.print("Hoşgeldin");
lcd.setCursor(4,1);
lcd.print("OverDrive");
delay (5000);
lcd.clear();
lcd.write(2);
lcd.setCursor(2,0);
lcd.print("stek OverDrive");
lcd.setCursor(3,1);
lcd.print("Komuta Odas");
lcd.setCursor(14,1);
lcd.write(3);
}

void loop() {
  
 if (digitalRead(PiButton == HIGH))(PiGreenLed == LOW); {
  digitalWrite(PiGreenLed,HIGH);
  digitalWrite(PiRedLed,LOW);
  digitalWrite(PiRelay,HIGH);
  
  lcd.clear();
  lcd.setCursor(3,0);
  lcd.print("Raspberry Pi");
  lcd.setCursor(5,1);
  lcd.print("a");
  lcd.setCursor(6,1);
  lcd.write(1);
  lcd.setCursor(7,1);
  lcd.write(3);
  lcd.setCursor(8,1);
  lcd.print("l");
  lcd.setCursor(9,1);
  lcd.write(3);
  lcd.setCursor(10,1);
  lcd.print("yor");
  delay(1500);
  lcd.clear();
  lcd.write(2);
  lcd.setCursor(2,0);
  lcd.print("stek OverDrive");
  lcd.setCursor(3,1);
  lcd.print("Komuta Odas");
  lcd.setCursor(14,1);
  lcd.write(3);
  
  
 }

 
 if (digitalRead(PiButton == HIGH))(PiRedLed == LOW); {
  digitalWrite(PiRedLed,HIGH);
  digitalWrite(PiGreenLed,LOW);
  digitalWrite(PiRelay,LOW);
  
  lcd.clear();
  lcd.setCursor(3,0);
  lcd.print("Raspberry Pi");
  lcd.setCursor(5,1);
  lcd.print("kapan");
  lcd.setCursor(10,1);
  lcd.write(3);
  lcd.setCursor(11,1);
  lcd.print("yor");
  delay(1500);
  lcd.clear();
  lcd.write(2);
  lcd.setCursor(2,0);
  lcd.print("stek OverDrive");
  lcd.setCursor(3,1);
  lcd.print("Komuta Odas");
  lcd.setCursor(14,1);
  lcd.write(3);
  
  }
 
 
 if (digitalRead(PcButton == HIGH)(PcGreenLed == LOW)); {
  digitalWrite(PcGreenLed,HIGH);
  digitalWrite(PcRedLed,LOW);
  digitalWrite(PcRelay,HIGH);

  lcd.clear();
  lcd.setCursor(4,0);
  lcd.print("Bilgisayar");
  lcd.setCursor(5,1);
  lcd.print("a");
  lcd.setCursor(6,1);
  lcd.write(1);
  lcd.setCursor(7,1);
  lcd.write(3);
  lcd.setCursor(8,1);
  lcd.print("l");
  lcd.setCursor(9,1);
  lcd.write(3);
  lcd.setCursor(10,1);
  lcd.print("yor");
  delay(1500);
  lcd.clear();
  lcd.write(2);
  lcd.setCursor(2,0);
  lcd.print("stek OverDrive");
  lcd.setCursor(3,1);
  lcd.print("Komuta Odas");
  lcd.setCursor(14,1);
  lcd.write(3);
  
 }
 

 if (digitalRead(PcButton == HIGH))(PcRedLed == LOW); {
  digitalWrite(PcRedLed,HIGH);
  digitalWrite(PcGreenLed,LOW);
  digitalWrite(PcRelay,LOW);
  
  lcd.clear();
  lcd.setCursor(4,0);
  lcd.print("Bilgisayar");
  lcd.setCursor(5,1);
  lcd.print("kapan");
  lcd.setCursor(10,1);
  lcd.write(3);
  lcd.setCursor(11,1);
  lcd.print("yor");
  delay(1500);
  lcd.clear();
  lcd.write(2);
  lcd.setCursor(2,0);
  lcd.print("stek OverDrive");
  lcd.setCursor(3,1);
  lcd.print("Komuta Odas");
  lcd.setCursor(14,1);
  lcd.write(3);
}

When you encounter an error you’ll see a button on the right side of the orange bar “Copy error messages” (or the icon that looks like two pieces of paper in the Arduino Web Editor). Click that button. Paste the error in a message here USING CODE TAGS (</> button on the forum toolbar). If the text exceeds the forum’s 9000 character limit, save it to a text file and post it as an attachment. If you click the “Reply” button here, you will see an “Attachments and other settings” link.

Please always do an Auto Format (Tools > Auto Format in the Arduino IDE or Ctrl + B in the Arduino Web Editor) on your code before posting it. This will make it easier for you to spot bugs and make it easier for us to read.

Torik61:

 if (digitalRead(PiButton == HIGH))(PiGreenLed == LOW); {

There are multiple problems with this code. Please take some time to study the relevant reference pages:

It’s really a bad idea to just write a bunch of code without any testing along the way, as you have obviously done here. You need to write code incrementally. Start with the most basic code, test it to make sure it behaves as expected, add a bit more complexity, test again, and so on.

Thx for help I figured out that I was missing a "}". Sorry for posting it like that I didn't knew that.

Besides these lines

if (digitalRead(PiButton == HIGH))(PiGreenLed == LOW); {

which may have been intended as

if ( (digitalRead(PiButton == HIGH) {
digitalWrite (PiGreenLed), LOW);

since PiGreenLed is an output,

the posted code is also missing a } at the end. Maybe you just didn't copy it in?