int sensorValue = analogRead(A0);

Using Arduino Programming Questions
1

hello everybody , my potentiometer give values from 0-1023 , and i wanted to the value to be duplicated , i can duplicate the the printed value but i wanted the sensor value to be duplicated, here i attached the code .

// the setup routine runs once when you press reset:
void setup() {
// initialize serial communication at 9600 bits per second:
Serial.begin(9600);
}

// the loop routine runs over and over again forever:
void loop() {
// read the input on analog pin 0:
int sensorValue = analogRead(A0);
// print out the value you read:
Serial.println(sensorValue);
delay(1); // delay in between reads for stability
}

2

i wanted the sensor value to be duplicated

Do you mean that you want it to be doubled or maybe printed twice ?

3 
int sensorValue = analogRead(A0) * 2;

If you like more control over the resulting value, have a look on the Map() method.

4

What you meant by duplicate?

5

thanks everybody for reply thanks again to thomai ,that the answer of my question it works fine