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  1. #include <iostream>
  2. #include <map>
  3.  
  4. class ReportCard
  5. {
  6.    //private:  this is the default anyway for a class
  7.    public: //made to be able to print the internals below.
  8.         std::map<std::string, double> m_report_card;
  9.  
  10.    public:
  11.  
  12.  
  13.         /* this returns an instance of the std::map. The map is copied and 
  14.         returned, so any modifications will not affect m_report_card
  15.         std::map<std::string, double> getReportCardInstance()
  16.         {
  17.             return m_report_card;
  18.         }
  19.  
  20.         if you want to do this, return std::map<std::string, double>&.
  21.         std::map<std::string, double>& getReportCardInstance()
  22.         {
  23.             return m_report_card;
  24.         }
  25.         */
  26.  
  27.         // better solution is to have a method to add the report
  28.  
  29.         void add_report(const std::string& first,double second)
  30.         {
  31.             m_report_card[first] = second;
  32.         }  
  33.  
  34. };
  35.  
  36.  
  37. int main() {
  38.     ReportCard rc;
  39.     rc.add_report("Percy",1.0);
  40.     rc.add_report("Pig",2.0);
  41.  
  42.     for(auto internal_report_card : rc.m_report_card)
  43.     {
  44.         std::cout << internal_report_card.first << ", " 
  45.                   << internal_report_card.second << std::endl;
  46.     }
  47.  
  48.     return 0;
  49. }
Success #stdin #stdout 0s 4360KB
comments (?)
stdin 
Standard input is empty
stdout 
Percy, 1
Pig, 2
https://ideone.com/esytXH
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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