What?!?!

hi i've been working on an project for quite some time and when uploading my code this error came up

error: expected unqualified-id before numeric constant in function 'void loop()'

Now here is the code i got the error from

const int led1=12;
const int led2=11;
const int led3=10;
const int led4=9;
const int led5=8;
const int led6=7;
const int led7=6;
const int led8=5;
const int led9=4;
const int led10=3;
const int missle=13;
const int power=2;
int switchstate=0

void setup () {
pinMode(led1,OUTPUT);
pinMode(led2,OUTPUT);
pinMode(led3,OUTPUT);
pinMode(led4,OUTPUT);
pinMode(led5,OUTPUT);
pinMode(led6,OUTPUT);
pinMode(led7,OUTPUT);
pinMode(led8,OUTPUT);
pinMode(led9,OUTPUT);
pinMode(led10,OUTPUT);
pinMode(power,OUTPUT);
pinMode(missle,INPUT);
}

void loop () {
switchstate=digitalRead(missle);
if (swithcstate==HIGH);
{
digitalWrite(led1,HIGH);
digitalWrite(led2,HIGH);
digitalWrite(led3,HIGH);
digitalWrite(led4,HIGH);
digitalWrite(led5,HIGH);
digitalWrite(led6,HIGH);
digitalWrite(led7,HIGH);
digitalWrite(led8,HIGH);
digitalWrite(led9,HIGH);
digitalWrite(led10,HIGH);
delay(1000);
digitalWrite(led1,HIGH);
digitalWrite(led2,HIGH);
digitalWrite(led3,HIGH);
digitalWrite(led4,HIGH);
digitalWrite(led5,HIGH);
digitalWrite(led6,HIGH);
digitalWrite(led7,HIGH);
digitalWrite(led8,HIGH);
digitalWrite(led9,HIGH);
digitalWrite(led10,LOW);
delay(1000);
digitalWrite(led1,HIGH);
digitalWrite(led2,HIGH);
digitalWrite(led3,HIGH);
digitalWrite(led4,HIGH);
digitalWrite(led5,HIGH);
digitalWrite(led6,HIGH);
digitalWrite(led7,HIGH);
digitalWrite(led8,HIGH);
digitalWrite(led9,LOW);
digitalWrite(led10,LOW);
delay(1000);
digitalWrite(led1,HIGH);
digitalWrite(led2,HIGH);
digitalWrite(led3,HIGH);
digitalWrite(led4,HIGH);
digitalWrite(led5,HIGH);
digitalWrite(led6,HIGH);
digitalWrite(led7,HIGH);
digitalWrite(led8,LOW);
digitalWrite(led9,LOW);
digitalWrite(led10,LOW);
delay(1000);
digitalWrite(led1,HIGH);
digitalWrite(led2,HIGH);
digitalWrite(led3,HIGH);
digitalWrite(led4,HIGH);
digitalWrite(led5,HIGH);
digitalWrite(led6,HIGH);
digitalWrite(led7,LOW);
digitalWrite(led8,LOW);
digitalWrite(led9,LOW);
digitalWrite(led10,LOW);
delay(1000);
digitalWrite(led1,HIGH);
digitalWrite(led2,HIGH);
digitalWrite(led3,HIGH);
digitalWrite(led4,HIGH);
digitalWrite(led5,HIGH);
digitalWrite(led6,LOW);
digitalWrite(led7,LOW);
digitalWrite(led8,LOW);
digitalWrite(led9,LOW);
digitalWrite(led10,LOW);
delay(1000);
digitalWrite(led1,HIGH);
digitalWrite(led2,HIGH);
digitalWrite(led3,HIGH);
digitalWrite(led4,HIGH);
digitalWrite(led5,LOW);
digitalWrite(led6,LOW);
digitalWrite(led7,LOW);
digitalWrite(led8,LOW);
digitalWrite(led9,LOW);
digitalWrite(led10,LOW);
delay(1000);
digitalWrite(led1,HIGH);
digitalWrite(led2,HIGH);
digitalWrite(led3,HIGH);
digitalWrite(led4,LOW);
digitalWrite(led5,LOW);
digitalWrite(led6,LOW);
digitalWrite(led7,LOW);
digitalWrite(led8,LOW);
digitalWrite(led9,LOW);
digitalWrite(led10,LOW);
delay(1000);
digitalWrite(led1,HIGH);
digitalWrite(led2,HIGH);
digitalWrite(led3,LOW);
digitalWrite(led4,LOW);
digitalWrite(led5,LOW);
digitalWrite(led6,LOW);
digitalWrite(led7,LOW);
digitalWrite(led8,LOW);
digitalWrite(led9,LOW);
digitalWrite(led10,LOW);
delay(1000);
digitalWrite(led1,HIGH);
digitalWrite(led2,LOW);
digitalWrite(led3,LOW);
digitalWrite(led4,LOW);
digitalWrite(led5,LOW);
digitalWrite(led6,LOW);
digitalWrite(led7,LOW);
digitalWrite(led8,LOW);
digitalWrite(led9,LOW);
digitalWrite(led10,LOW);
delay(1000);
digitalWrite(led1,LOW);
digitalWrite(led2,LOW);
digitalWrite(led3,LOW);
digitalWrite(led4,LOW);
digitalWrite(led5,LOW);
digitalWrite(led6,LOW);
digitalWrite(led7,LOW);
digitalWrite(led8,LOW);
digitalWrite(led9,LOW);
digitalWrite(led10,LOW);

digitalWrite(power,HIGH);
}
else{
digitalWrite(led1,LOW);
digitalWrite(led2,LOW);
digitalWrite(led3,LOW);
digitalWrite(led4,LOW);
digitalWrite(led5,LOW);
digitalWrite(led6,LOW);
digitalWrite(led7,LOW);
digitalWrite(led8,LOW);
digitalWrite(led9,LOW);
digitalWrite(led10,LOW);
digitalWrite(power,LOW);
}
}

If you can please help

int switchstate=0

void setup () {

You need one of these ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

Would be nice to post code properly, tto, using the # button. Please modify your post, select all the code (yeah, it will take a while), and select the # button. Then, save.

By the way, arrays and for loops would cut down drastically on the amount of code you are using.

if (swithcstate==HIGH);

This ; at the end of the if will give you problems if you dont remove it the code inside the {} will be always executed because its outside the if.

this line needs a semicolon:
int switchstate=0

typo in spelling of switchstate here:
if (swithcstate==HIGH);
{
and you don't want the semicolon at the end of the above line

should be
if (switchstate==HIGH) // NO SEMICOLON HERE
{

@OP, you must really like typing!
Your code should be about 20% of what you have written.

cool thanks for solving my problem

    delay(1000);
    digitalWrite(led1,HIGH);
...
    delay(1000);
    digitalWrite(led1,HIGH);
...
    delay(1000);
    digitalWrite(led1,HIGH);
...
    delay(1000); 
    digitalWrite(led1,HIGH);

led1 stays HIGH you know. You can get rid of most of your code.