error message

Projects Programming
4

I have adjusted the forum so it should be easier to read now.I also made a change to the code that concerns the push button but now I am getting a error.

'buttonState' does not name a type

int redLED = 8;
int redOnTime = 250;
int redOffTime = 250;
int yellowButton = 2;
int tempPin = A0;

void setup() {
 Serial.begin(9600);
 pinMode(redLED, OUTPUT);
 pinMode(yellowButton, INPUT);
}

void loop()
{
 float voltage, degreesC, degreesF;
 voltage = getVoltage(tempPin);
 degreesC = (voltage - .5) * 100;
 degreesF = degreesC * (9 / 5) + 32;

 Serial.print("voltage: ");
 Serial.print(voltage);
 Serial.print(" deg C: ");
 Serial.print(degreesC);
 Serial.print(" deg F: ");
 Serial.println(degreesF);

 delay(1000);
}

int buttonState;
buttonState = digitalRead(yellowButton);

if (buttonState == LOW)
{
 digitalWrite(redLED, HIGH);
}

float getVoltage(int pin)
{
 return (analogRead(pin) * 0.004882814);
}