Transfer parameter-value from loop to function

Projects Programming
11 
void setup()
{
  Serial.begin(115200);
}

void loop()
{
  byte number = random(256); //a byte variable local to loop()
  showNumber(number); //pass the value to a function
  delay(1000);
}

void showNumber(byte theByte) //value passed is named theByte in the function
{
  Serial.print("value in the function : ");
  Serial.println(theByte);
}