Arduino TM35 Temperature Sensor Wrong - c++

Question

I am starting out trying to learn some C++ and embeded programming but i am having some real issues with my TM35 sensor.
It is worth noting my bedroom is not in the 50 degrees celsius, its mid 20's at the highest.
The Sensor is connected to the A0 Serial port, 5v and ground as it should, and i have checked its done the right way around with the middle leg of the sensor going to a0 and with the flat side facing you the left pin is going to 5v and right pin to ground.
Below is the code, it is not my code as im learning im just playing with other peoples code for now.
const byte tempPin = A0;
float calibration = 0.1039;
float temp; // Celcius
float volts;
void setup() {
Serial.begin(9600);
analogReference(INTERNAL1V1); // use internal 1.1volt Aref
// change INTERNAL to INTERNAL1V1 for a Mega
}
void loop() {
temp = analogRead(tempPin) * calibration; // get temp
volts = analogRead(tempPin);
Serial.print("Volts: ");
Serial.print(volts);
Serial.print(", Temperature: ");
Serial.print(temp, 1); // one decimal place resolution is all you get
Serial.println("*C");
delay(1000); // use a non-blocking delay when combined with other code
}
I have also tried this code too but same results.
float temp;
void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
}
void loop() {
// put your main code here, to run repeatedly:
temp = analogRead(A0);
temp = temp * 0.48828125;
Serial.print("Temperature: ");Serial.print(temp);Serial.print("*C");
Serial.println();
delay(1000);
}