motion, distance and temperature detector

int sensor=13;
int sensor_value;
int trigPin=12;
int echoPin=11;
long duration;
int distance;
float temp;
float ftemp;
int tempPin=0;
void setup() {
  // put your setup code here, to run once:
pinMode(sensor,INPUT);
pinMode(trigPin,OUTPUT);
pinMode(echoPin,INPUT);
pinMode(10,OUTPUT);
pinMode(2,OUTPUT);
pinMode(3,OUTPUT);
pinMode(4,OUTPUT);
Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
sensor_value=digitalRead(sensor);
Serial.println(sensor_value);
if(sensor_value==0)
{
  digitalWrite(trigPin,LOW);
delayMicroseconds(2);
digitalWrite(trigPin,HIGH);
delayMicroseconds(10);
digitalWrite(trigPin,LOW);
duration= pulseIn(echoPin,HIGH);
distance=duration*(0.034/2);
Serial.print("Distance:");
Serial.println(distance);
digitalWrite(10,HIGH);
delay(1000);
  }
  else 
  { 
    temp=analogRead(tempPin);
temp=temp*0.48828125;
ftemp=temp+32;
Serial.print("temperature:");
Serial.print(temp);
Serial.print("*c");
Serial.println();
Serial.print("temperature:");
Serial.print(ftemp);
Serial.print("*f");
Serial.println();
digitalWrite(10,LOW);
if(temp>=24&&temp<25)
{ digitalWrite(3,LOW);
digitalWrite(4,LOW);
digitalWrite(2,HIGH);
delay(1000);
}
else if(temp>=25&&temp<26)
{
  digitalWrite(2,LOW);
  digitalWrite(4,LOW);
 digitalWrite(3,HIGH);
 delay(1000);
 }
 else if(temp>=23&&temp<24)
 {
  digitalWrite(2,LOW);
  digitalWrite(3,LOW);
 digitalWrite(4,HIGH);
 delay(1000);
  }
    }
}