//============================================================================
// Name        : increasing-numbers-v2.cpp
// Author      : R. W. Hasker
// Version     :
// Description : Rewrite of increasing-numbers.cpp using functions and doubles.
//============================================================================

#include <iostream>
using namespace std;

const int MAX_SCORES = 100;

// prototypes - note the semicolons at the ends of the lines
// Function comments are given below, but it would be more
//    traditional to put the documentation here (where clients will see it)
int readScores(double scores[], int);
bool increasing(double nums[], int size);

int main() {
   double scores[MAX_SCORES] = {0.0};
   cout << "Enter up to " << MAX_SCORES << " scores: ";
   int num_scores = readScores(scores, MAX_SCORES);
   if (increasing(scores, num_scores))
      cout << "Always increasing." << endl;
   else
      cout << "Decreased in at least one case.";
   return 0;
}

// Read up to max values into the array scores.
// The data read is returned through the array, and the actual number
//   of scores read is returned as the function's value.
int readScores(double scores[], int max) {
   double s;
   cin >> s;
   int count = 0;
   while (count < max && cin.good()) {
      scores[count] = s;
      ++count;
      cin >> s;
   }
   return count;
}

// return true iff values first size values in nums are strictly increasing
// Note that nums[] can also be declared as a pointer:
//    bool increasing(double* nums, int size);
// without any other changes to the function. nums[] could also be marked
//    as const.
bool increasing(double nums[], int size) {
   // terminate: find i such that nums[i] > nums[i+1] or i+1>size
   auto i = 0;
   while (i < size - 1 && nums[i] <= nums[i+1])
      i++;
   return i >= size - 1;
}