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  1. #include <iostream>
  2. #include <fstream>
  3. #include <iterator>
  4. #include <vector>
  5. #include <algorithm>
  6. #include <numeric>
  7.  
  8. int main()
  9. {
  10.     std::ifstream inp("scores.dat");
  11.     std::vector<int> scores;
  12.     std::copy(std::istream_iterator<int>(std::cin), std::istream_iterator<int>(),
  13.               std::back_inserter(scores));
  14.     auto minmax(std::minmax_element(std::begin(scores), std::end(scores)));
  15.     int excellent(0), satisfactory(0), normal(0), needImprovement(0);
  16.     double average = std::accumulate(std::begin(scores), std::end(scores), 0,
  17.                                      [&](int x, int y)
  18.                                      {        if (y < 50) ++needImprovement;
  19.                                          else if (y < 80) ++normal;
  20.                                          else if (y < 95) ++satisfactory;
  21.                                          else             ++excellent;
  22.                                          return x + y; });
  23.     average /= scores.size();
  24.     std::cout << "Maximum score is: " << *(minmax.second) << "\n" <<
  25.                  "Minimum score is: " << *(minmax.first) << "\n" <<
  26.                  "Average score is: " << average << "\n" <<
  27.                  "There is:\n" << excellent << " Excellent scores\n" <<
  28.                  satisfactory << " Satisfactory scores\n" << normal <<
  29.                  " Normal scores\n" << needImprovement << " Needs improvement!";
  30. }
Runtime error #stdin #stdout 0s 2988KB
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https://ideone.com/3Gp9gv
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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