//for 3 temperature sensors, attached to analog pins 0,1,2

void setup() {
  // open a serial connection to display values
  Serial.begin(9600);
}

void loop() {
  unsigned long loopbegin=millis();//keeps track of time
  unsigned long sum=0;
  
  for(int i=0; i<100; i++)//measure temp 100 times
  {sum=sum+analogRead(0);//first temperature sensor
  }
  unsigned long time1=millis();
  float voltage = (sum / 1024.0) * 5.0/100;
  float t1 = (voltage - .5) * 100;//convert to temperature
  
  sum=0;
  for(int i=0; i<100; i++)//measure temp 100 times
  {sum=sum+analogRead(1);//second temperature sensor
  }
  unsigned long time2=millis();
  voltage = (sum / 1024.0) * 5.0/100;
  float t2 = (voltage - .5) * 100;//convert to temperature
  
  sum=0;
  for(int i=0; i<100; i++)//measure temp 100 times
  {sum=sum+analogRead(2);//third temperature sensor
  }
  unsigned long time3=millis();
  voltage = (sum / 1024.0) * 5.0/100;
  float t3 = (voltage - .5) * 100;//convert to temperature
  
  Serial.print(time1);
  Serial.print(" ");
  Serial.print(t1);
  Serial.print(" ");
    Serial.print(time2);
  Serial.print(" ");
  Serial.print(t2);
  Serial.print(" ");
    Serial.print(time3);
  Serial.print(" ");
  Serial.println(t3);
unsigned long loopend=millis();
delay(5000-loopend+loopbegin);//repeat cycle every 5 s
  
}