programa arduino

me sale este error:

ARDUINO-DELAY.ino:11:1: error: stray '' in program Error de compilación alguien que pueda decirme por favor que es ,este es el codigo int pinG=22; int pinF=23; int pinA=24; int pinB=25; int pinD=26; int pinC=27; int pinE=28; int contador=0; const int cajero1 = 32; const int cajero2= 30; const int cajero3=34;
const int pulsadorturnos=36;
int display1=40;
int display2=41;
int display3=42;

void setup()
{
pinMode(pinA, OUTPUT);
pinMode(pinB, OUTPUT);
pinMode(pinC, OUTPUT);
pinMode(pinD, OUTPUT);
pinMode(pinE, OUTPUT);
pinMode(pinF, OUTPUT);
pinMode(pinG, OUTPUT);
pinMode(cajero1, INPUT);
pinMode(cajero2,INPUT);
pinMode(cajero3,INPUT);
pinMode(pulsadorturnos,INPUT);
pinMode (display1,OUTPUT);
pinMode(display2,OUTPUT);
pinMode(display3,OUTPUT);

}

void loop()
{

digitalRead(pulsadorturnos);

digitalWrite(display1,LOW);
digitalWrite (display2,LOW);
digitalWrite(display3,LOW);

if (digitalRead(pulsadorturnos) == LOW)
{

contador ++;
}

if(digitalRead(cajero2)==LOW)
{

contador ++;
}

if(contador==1){
digitalWrite(display1,HIGH);
digitalWrite(pinA, LOW);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, LOW);
digitalWrite(pinE, LOW);
digitalWrite(pinF, LOW);
digitalWrite(pinG, LOW);
}
delay(50);
if(contador==2){
digitalWrite(display1,HIGH);
digitalWrite(pinA, HIGH);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, LOW);
digitalWrite(pinD, HIGH);
digitalWrite(pinE, HIGH);
digitalWrite(pinF, LOW);
digitalWrite(pinG, HIGH);
}
delay(50);
if(contador==3){
digitalWrite(display1,HIGH);
digitalWrite(pinA, HIGH);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, HIGH);
digitalWrite(pinE, LOW);
digitalWrite(pinF, LOW);
digitalWrite(pinG, HIGH);
}
delay(50);

if(contador==0)
{
digitalWrite(display2,HIGH);
digitalWrite(pinA, HIGH);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, HIGH);
digitalWrite(pinE, HIGH);
digitalWrite(pinF, HIGH);
digitalWrite(pinG, LOW);
}
delay(50);
if(contador==1){
digitalWrite(display2,HIGH);
digitalWrite(pinA, LOW);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, LOW);
digitalWrite(pinE, LOW);
digitalWrite(pinF, LOW);
digitalWrite(pinG, LOW);
}
delay(50);
if(contador==2){
digitalWrite(display2,HIGH);
digitalWrite(pinA, HIGH);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, LOW);
digitalWrite(pinD, HIGH);
digitalWrite(pinE, HIGH);
digitalWrite(pinF, LOW);
digitalWrite(pinG, HIGH);
}
delay(50);
if(contador==3){
digitalWrite(display2,HIGH);
digitalWrite(pinA, HIGH);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, HIGH);
digitalWrite(pinE, LOW);
digitalWrite(pinF, LOW);
digitalWrite(pinG, HIGH);
}
delay(50);
if(contador==4){
digitalWrite(display2,HIGH);
digitalWrite(pinA, LOW);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, LOW);
digitalWrite(pinE, LOW);
digitalWrite(pinF, HIGH);
digitalWrite(pinG, HIGH);
}
delay(50);
if(contador==5){
digitalWrite(display2,HIGH);
digitalWrite(pinA, HIGH);
digitalWrite(pinB, LOW);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, HIGH);
digitalWrite(pinE, LOW);
digitalWrite(pinF, HIGH);
digitalWrite(pinG, HIGH);
}
delay(50);
if(contador==6){
digitalWrite(display2,HIGH);
digitalWrite(pinA, HIGH);
digitalWrite(pinB, LOW);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, HIGH);
digitalWrite(pinE, HIGH);
digitalWrite(pinF, HIGH);
digitalWrite(pinG, HIGH);
}
delay(50);
if(contador==7){
digitalWrite(display2,HIGH);
digitalWrite(pinA, HIGH);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, LOW);
digitalWrite(pinE, LOW);
digitalWrite(pinF, LOW);
digitalWrite(pinG, LOW);
}
delay(50);
if(contador==8){
digitalWrite(display2,HIGH);
digitalWrite(pinA, HIGH);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, HIGH);
digitalWrite(pinE, HIGH);
digitalWrite(pinF, HIGH);
digitalWrite(pinG, HIGH);
}
delay(50);
if(contador==9){
digitalWrite(display2,HIGH);
digitalWrite(pinA, HIGH);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, HIGH);
digitalWrite(pinE, LOW);
digitalWrite(pinF, HIGH);
digitalWrite(pinG, HIGH);

if(contador >= 9)
contador=0;

delay(50);
}
if(digitalRead (cajero3)==LOW)

{

contador ++;
}
if(contador==0){
digitalWrite(display3,HIGH);
digitalWrite(pinA, HIGH);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, HIGH);
digitalWrite(pinE, HIGH);
digitalWrite(pinF, HIGH);
digitalWrite(pinG, LOW);
}
delay(50);
if(contador==1){
digitalWrite(display3,HIGH);
digitalWrite(pinA, LOW);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, LOW);
digitalWrite(pinE, LOW);
digitalWrite(pinF, LOW);
digitalWrite(pinG, LOW);
}
delay(50);
if(contador==2){
digitalWrite(display3,HIGH);
digitalWrite(pinA, HIGH);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, LOW);
digitalWrite(pinD, HIGH);
digitalWrite(pinE, HIGH);
digitalWrite(pinF, LOW);
digitalWrite(pinG, HIGH);
}
delay(50);
if(contador==3){
digitalWrite(display3,HIGH);
digitalWrite(pinA, HIGH);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, HIGH);
digitalWrite(pinE, LOW);
digitalWrite(pinF, LOW);
digitalWrite(pinG, HIGH);
}
delay(50);
if(contador==4){
digitalWrite(display3,HIGH);
digitalWrite(pinA, LOW);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, LOW);
digitalWrite(pinE, LOW);
digitalWrite(pinF, HIGH);
digitalWrite(pinG, HIGH);
}
delay(50);
if(contador==5){
digitalWrite(display3,HIGH);
digitalWrite(pinA, HIGH);
digitalWrite(pinB, LOW);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, HIGH);
digitalWrite(pinE, LOW);
digitalWrite(pinF, HIGH);
digitalWrite(pinG, HIGH);
}
delay(50);
if(contador==6){
digitalWrite(display3,HIGH);
digitalWrite(pinA, HIGH);
digitalWrite(pinB, LOW);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, HIGH);
digitalWrite(pinE, HIGH);
digitalWrite(pinF, HIGH);
digitalWrite(pinG, HIGH);
}
delay(50);
if(contador==7){
digitalWrite(display3,HIGH);
digitalWrite(pinA, HIGH);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, LOW);
digitalWrite(pinE, LOW);
digitalWrite(pinF, LOW);
digitalWrite(pinG, LOW);
}
delay(50);
if(contador==8){
digitalWrite(display3,HIGH);
digitalWrite(pinA, HIGH);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, HIGH);
digitalWrite(pinE, HIGH);
digitalWrite(pinF, HIGH);
digitalWrite(pinG, HIGH);
}
delay(50);
if(contador==9){
digitalWrite(display3,HIGH);
digitalWrite(pinA, HIGH);
digitalWrite(pinB, HIGH);
digitalWrite(pinC, HIGH);
digitalWrite(pinD, HIGH);
digitalWrite(pinE, LOW);
digitalWrite(pinF, HIGH);
digitalWrite(pinG, HIGH);

if(contador >= 9)
contador=0;

delay(50);
}
}

const int cajero3`=34;

There it is.

Preguntas en español, foro en Español.

Luego mira esto

ARDUINO-DELAY.ino:11:1: error: stray '`' in program
Error de compilación

Ahi te dice qeu tu sketch de nombre ARDUINO-DELAY.ino tiene un error en la linea 11
justamente porque hay un caracter extraño '`' que esta en la línea que ya te indicaron.