max analog Read example

int maxReading=0;
int maxIndex=0;
int readings[8];

void goRead(int readIndex) {
  // see what the analog value is
  int currentReading = analogRead(A0);

  // is it bigger than our already known max value?
  if (currentReading > maxReading) {
    // okay, save the max value and the index that it happened
    maxReading = currentReading;
    maxIndex = readIndex;
  }
  // store our readings, for ... reasons?
  readings[readIndex] = currentReading;

}

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  //reset your maxes
  maxReading = 0;
  maxIndex=0;

  // whatever happens, first read
  goRead(0);
  // more stuff happens
  goRead(1);
  // more stuff happens
  goRead(2);
  // more stuff happens
  goRead(3);
  // more stuff happens
  goRead(4);
  // more stuff happens
  goRead(5);
  // more stuff happens
  goRead(6);
  // more stuff happens
  goRead(7);

  // maxReading and maxIndex are your max values...

}