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  1. #include <algorithm>
  2. #include <numeric>
  3. #include <iostream>
  4. #include <cmath>
  5.  
  6. int main()
  7. {
  8.     float values[] = { 1, 2, 3, 4, 5 };
  9.     const int numValues = sizeof(values) / sizeof(float);
  10.  
  11.     // get the average
  12.     float average = std::accumulate(values, values + numValues, 0.0F) / numValues;
  13.  
  14.     // sort the values
  15.     std::sort(values, values + numValues);
  16.  
  17.     // find where the average would be inserted 
  18.     float *closest = std::upper_bound(values, values + numValues, average);
  19.  
  20.     // assume closest is the value greater than average
  21.     float *absClosest = closest;
  22.  
  23.     // check number before the insertion point
  24.     if (closest != values)
  25.     {
  26.         float *closest2 = closest - 1;
  27.  
  28.         // get the difference in both numbers and average
  29.         if (fabs(*closest2 - average) < fabs(*closest - average))
  30.             absClosest = closest2;
  31.     }
  32.     std::cout << "The average is " << average << "\nThe closest to average is " << *absClosest;
  33. }
  34.  
Success #stdin #stdout 0s 4352KB
comments (?)
stdin 
Standard input is empty
stdout 
The average is 3
The closest to average is 3
https://ideone.com/yDOBOW
language:
C++ (gcc 8.3)
created:
8 years ago
visibility:
public

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