Temperature on an LCD

1#include <LiquidCrystal.h>//imports the libraries
2LiquidCrystal lcd(12,  11, 5, 4, 3, 2);//sets the LCD pins
3const int sensorPin = A0;
4float fntemp;
5float  sum;
6float voltage;
7int sensorVal;
8int count;
9void setup() {
10  Serial.begin(250000);//begins  serial interface
11  lcd.begin(16, 2);
12  lcd.setCursor(0, 0);
13  sum = 0.0;
14  voltage = 0.0;
15  fntemp = 0.0;
16  sensorVal = 0;
17  count = 0;  
18}
19
20void  loop() {  
21  if (count < 30) {//value represents the number of values averaged.  Can
22    sensorVal = analogRead(sensorPin);//be changed
23    voltage = (sensorVal/1024.0)*5.0;//conversion  of sensor value to °C
24    sum += ((voltage-0.5) * 100);
25    count ++;
26    delay(1);//needed to recieve different vslues each time
27  }
28  else {
29    fntemp = sum / count;//averaging
30    count = 0;
31    sum = 0.0;
32  }
33  Serial.println(fntemp);
34  lcd.print(fntemp);
35  lcd.print(" C");
36  lcd.setCursor(0,  1);
37  
38  delay(50);//delay to prevent over flashing of the LCD
39  lcd.clear();
40  delay(0);
41}
42