Went over to StackOverflow and found a good explanation on how to do things better.
Sharing here for people who run by this thread.
struct Pot {
byte pin;
int threshold;
int lastReading;
int currentReading;
};
struct Pot pots[] = { {A0, 2},{A2,2},{A4,2} };
void rePot(struct Pot * pot) {
int reading = map(analogRead(pot->pin), 0, 665, 0, 200);
if(abs(reading - pot->lastReading) >= pot->threshold){
pot->currentReading = (reading/2);
Serial.println(pot->currentReading);
pot->lastReading = reading;
} // end of if statement
} // end of rePot
void setup(){
Serial.begin(9600);
}
void loop(){
rePot(&pots[0]);
rePot(&pots[1]);
rePot(&pots[2]);
delay(10);
}