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  1. #include <iostream>
  2. #include <fstream>
  3. #include <string>
  4. #include <vector>
  5.  
  6. struct Student_info {
  7.    friend std::ostream &operator<<( std::ostream &output,
  8.                                     const Student_info &S ) { // overloads operator to print name and grades
  9.       output << S.name << ": ";
  10.       for (auto it = S.homework.begin(); it != S.homework.end(); ++it)
  11.          std::cout << *it << ' ';
  12.       return output;
  13.    }
  14.  
  15.    friend std::istream &operator>>( std::istream &input, Student_info &S ) { // overloads operator to read into Student_info object
  16.       input >> S.name >> S.midterm >> S.final;
  17.       double x;
  18.       if (input) {
  19.          S.homework.clear();
  20.          while (input >> x) {
  21.             S.homework.push_back(x);
  22.          }
  23.          input.clear();
  24.       }
  25.       return input;
  26.    }
  27.  
  28.    std::string name; // student name
  29.    double midterm, final; // student exam scores
  30.    std::vector<double> homework; // student homework total score (mean or median)
  31.  
  32. };
  33.  
  34.  
  35. int main() {
  36.    //std::ifstream myfile ("/Users/.../Documents/C++/example_short.txt");
  37.    Student_info student; // temp object for receiving data from istream
  38.    std::vector<Student_info> student_list; // list of students and their test grades
  39.    while (std::cin >> student) { // or myfile >> student
  40.       student_list.push_back(student);
  41.       student.homework.clear();
  42.    }
  43.    for (auto it = student_list.begin(); it != student_list.end(); ++it) {
  44.       std::cout << *it << '\n';
  45.    }
  46.    return 0;
  47. }
  48.  
Success #stdin #stdout 0s 16064KB
comments (?)
stdin
copy 
Eunice 29 87 42 33 18 13 
Mary 71 24 3 96 70 14 
Carl 61 12 10 44 82 36 
Debbie 25 42 53 63 34 95
stdout
copy 
Eunice: 42 33 18 13 
Mary: 3 96 70 14 
Carl: 10 44 82 36 
Debbie: 53 63 34 95
https://ideone.com/13wHLa
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
secret

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