I forgot () at the end of function call, but got no errors?

Projects Programming
2

I think that is an error, because there is nothing else with that name, but the IDE did not complain. But this happens only in if statement

if your question is calling funtion without () is error ?
No, function name represents the starting memory address of it's. e.g

void blnk()
{
  digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);               // wait for a second
  digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);  
}
// the setup routine runs once when you press reset:
void setup() {                
  // initialize the digital pin as an output.
  pinMode(led, OUTPUT);     
 
}

// the loop routine runs over and over again forever:
void loop() {
  blnk;  //
  Serial.println();
               // wait for a second
}

here blnk; is the case and in your case Switch14 is starting value of function