Ok, here is the problem.

Projects Programming
19 
  unsigned long pingRange (byte pingPin) 

  pinMode(pingPin, OUTPUT);
  digitalWrite(pingPin, LOW);
  delayMicroseconds(2);
  digitalWrite(pingPin, HIGH);
  delayMicroseconds(5);
  digitalWrite(pingPin, LOW);

  pinMode(pingPin, INPUT);
  return pulseIn(pingPin, HIGH);
}

You can't declare functions inside other functions. You also need curly braces surrounding what code is to be part of the function.