Error: Expected unqualified-id before numeric constant.

Hey. I'm doing a project for school, and having this error in the second line of code already. What am I doing wrong here?

int led_1 = 13; //The five LED-pins
int led_2 = 12;
int led_3 = 11;
int led_4 = 10;
int led_5 = 9;

int button_1 = 8;//The four button input pins
int button_2 = 7;
int button_3 = 6;
int button_4 = 5;
int button_5 = 4;

int niveau = 0
void setup()
{
  pinMode(led_1,OUTPUT);//Initializing LED-pins as output
  pinMode(led_2,OUTPUT);
  pinMode(led_3,OUTPUT);
  pinMode(led_4,OUTPUT);
  pinMode(led_5,OUTPUT);
  
  pinMode(button_1,INPUT);//Initializing buttons as input
  pinMode(button_2,INPUT);
  pinMode(button_3,INPUT);
  pinMode(button_4,INPUT);
  pinMode(button_5,INPUT);

}

The error highlights the second line, but the description gives you the error...

sketch_jan23a:2: error: expected unqualified-id before numeric constant
sketch_jan23a:14: error: expected ',' or ';' before 'void'

So take a look before "void", and add the semicolon.

int niveau = 0

Aren't you missing something?

The value that you are trying to assign to the variable is 0, , , void, etc. which is not a valid value.

Oh well. I added a semicolon to "int niveau = 0". And also, this isn't my whole code. I need the niveau for later.