#include <iostream>
using namespace std;
#include <time.h>
#include <stdlib.h>

// function prototypes
void initArray();
void displayArray();
void muddleArray();
int largestInArray();
double arrayAverage();

// declare global variables
const int MAX = 12;
int myarray[MAX];

// define main function
int main() {
  srand( time( NULL ));
  initArray();
  displayArray();
  cout << "largest = " << largestInArray() 
       << endl;
  cout << "average = " << arrayAverage()
       << endl;
  muddleArray();
  displayArray();
  cout << "largest = " << largestInArray() 
       << endl;
  cout << "average = " << arrayAverage()
       << endl;
} // end of main()

void initArray() {
  for ( int i=0; i<MAX; i++ ) {
    myarray[i] = i;
  }
} // end of initArray()

void displayArray() {
  for ( int i=0; i<MAX; i++ ) {
    cout << myarray[i] << ",";
  }
  cout << endl;
} // end of displayArray()

void muddleArray() {
  for ( int i=0; i<MAX; i++ ) {
    myarray[i] += rand();
  }
} // end of muddleArray()

int largestInArray() {
  int max = myarray[0];
  for ( int i=1; i<MAX; i++ ) {
    if ( myarray[i] > max ) {
      max = myarray[i];
    }
  }
  return( max );
} // end of largestInArray()

int doSomething() {
  int max = 0;
  for ( int i=1; i<MAX; i++ ) {
    if ( myarray[i] > myarray[max] ) {
      max = i;
    }
  }
  return( max );
} // end of doSomething()

double arrayAverage() {
  int tmp = 0;
  for ( int i=0; i<MAX; i++ ) {
    tmp += myarray[i];
  }
  return( (double)tmp / (double)MAX );
} // end of arrayAverage()