help with function defenition and token

I am trying to figure out what this means

essentially trying to reset DS18b20

#include <DHT.h>
#include <OneWire.h>
#include <DallasTemperature.h>
// DS18B20 Data wire is plugged into pin 10 on the Arduino
#define ONE_WIRE_BUS 10
#define Relay 3 // Pin to Activate relay
#define LED 13 // Pin to show relay is on (blue)
OneWire oneWire(ONE_WIRE_BUS);
// Pass our oneWire reference to Dallas Temperature.
DallasTemperature sensors(&oneWire);//https://www.hacktronics.com/Tutorials/arduino-1-wire-tutorial.html

void setup() {


  float getTemp(OneWire sensor) {
    byte data[12];
    byte addr[8];

    if ( !sensor.search(addr)) {

      sensor.reset_search();
      return -1000;
    }

    if ( OneWire::crc8( addr, 7) != addr[7]) {
      Serial.println("Bad CRC!");
      return -1000;
    }

    if ( addr[0] != 0x10 && addr[0] != 0x28) {
      Serial.print("Unknown device!");
      return -1000;
    }

    sensor.reset();
    sensor.select(addr);
    sensor.write(0x44, 1);

    byte present = sensor.reset();
    sensor.select(addr);
    sensor.write(0xBE);


    for (int i = 0; i < 9; i++) {
      data[i] = sensor.read();
    }

    sensor.reset_search();

    byte MSB = data[1];
    byte LSB = data[0];

    float tempRead = ((MSB << 8) | LSB);
    float TemperatureSum = tempRead / 16;

    return TemperatureSum;

  }


}

void loop() {
  // put your main code here, to run repeatedly:

}

I am trying to figure out what this means

What what means?

float getTemp;
void setup() {


  float getTemp(OneWire sensor) {

You can't have a function (getTemp()) inside another function (setup()). You shouldn't have a function and a variable with the same name.

Thanks Paul. Can you help me fix it?
I removed the float getTemp as it is a function.
But not sure about the second fix!

But not sure about the second fix!

If you can't put a function inside another function, your ONLY choice is to define the function OUTSIDE of any other function.

It is critical that you recognize when a function starts, and when it ends.

Look at the blink example, for instance. Where can you define a function, blinker() that returns nothing? Show us where you think you can, by posting your best attempt.

Like this

float getTemp(OneWire sensor) {
  byte data[12];
  byte addr[8];
}
void setup() {




  if ( !sensor.search(addr)) {

    sensor.reset_search();
    return -1000;
  }

  if ( OneWire::crc8( addr, 7) != addr[7]) {
    Serial.println("Bad CRC!");
    return -1000;
  }

  if ( addr[0] != 0x10 && addr[0] != 0x28) {
    Serial.print("Unknown device!");
    return -1000;
  }

  sensor.reset();
  sensor.select(addr);
  sensor.write(0x44, 1);

  byte present = sensor.reset();
  sensor.select(addr);
  sensor.write(0xBE);


  for (int i = 0; i < 9; i++) {
    data[i] = sensor.read();
  }

  sensor.reset_search();

  byte MSB = data[1];
  byte LSB = data[0];

  float tempRead = ((MSB << 8) | LSB);
  float TemperatureSum = tempRead / 16;

  return TemperatureSum;

}


}

void loop() {
  // put your main code here, to run repeatedly:

}

.Now it says ‘sensor’ was not declared in this scope . :o

Now it says 'sensor' was not declared in this scope

Well, it is telling the truth.

Where is sensor declared in your code ?

Shouldn't there be at least one library #included in your code ?

Helibob ,please check the first code sequences.All sensors are defined there.

Now wondering sensor vs sensors make a difference.
but sensor.reset_search(); is not a valid one either

Now wondering sensor vs sensors make a difference.

Well, as sensor is not declared in the code but sensors is then do you think referring to an object named sensor is going to work ?

Sensor is not working either.

Sensor is not working either.

Do you mean Sensor or sensor ?
Let's see some code

kinku:
Helibob ,please check the first code sequences.All sensors are defined there.

Now wondering sensor vs sensors make a difference.
but sensor.reset_search(); is not a valid one either

DallasTemperature sensors(&oneWire); !! sensors.

sensor helibob.
Cherk please explain a bit more!!!

Please post your code as it is now