#include <iostream>
 
using namespace std;
 
int maximum(int digits[], int size, int largest, int i);
 
int main()
{
  const int size = 5;
  int digits[size] = {2, 3, 4, 1, 0};
 
  cout << "\nThe largest digit is, " << maximum(digits, size, 0, 0) << ", thank you!\n";
  cout << endl;
}
 
 
int maximum(int digits[], int size, int largest, int i)
{
  if ( i < size )
  {
      if ( largest < digits[i])
          largest = digits[i];
 
      return maximum( digits, size, largest, i + 1);
  }
  return largest;
}

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