int valTemperature = 1; 
float volt = 20.0; 
float temperature = 0.0; 
void setup() { 
  Serial.begin(9600);
  Serial.print("Valeur capteur");
  Serial.print("; Tension en volt");
  Serial.println("; Temperature en °C");
}

void loop (){
  valTemperature = analogRead(0); 
  volt = (valTemperature/1023.0)*5.0; 

temperature = (volt-0.5)+100; 

  Serial.print(valTemperature); 
  Serial.print("; "); 
  Serial.print(volt, 2); 
  Serial.print(" ; ");
  Serial.println (temperature); 
  delay (500);
  }