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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. struct Guy ;
  5.  
  6. struct Girl
  7. {
  8.     std::vector<Guy*> boyfriends ;
  9. };
  10.  
  11. struct Guy
  12. {
  13.     Guy( const std::string& n ) : name(n) {}
  14.     const std::string name ;
  15.     // ...
  16. };
  17.  
  18. int main()
  19. {
  20.     Guy a( "a" ), b( "b" ), c( "c" ) ;
  21.  
  22.     Girl g ;
  23.  
  24.     g.boyfriends.push_back( &a ) ;
  25.     g.boyfriends.push_back( &b ) ;
  26.  
  27.     for( std::size_t i = 0 ; i < g.boyfriends.size() ; ++i )
  28.         std::cout << g.boyfriends[i]->name << ' ' ;
  29.     std::cout << '\n' ;
  30.  
  31.     g.boyfriends.push_back( &c ) ;
  32.  
  33.     for( std::size_t i = 0 ; i < g.boyfriends.size() ; ++i )
  34.         std::cout << g.boyfriends[i]->name << ' ' ;
  35.     std::cout << '\n' ;
  36. }
  37.  
Success #stdin #stdout 0s 2988KB
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stdin
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Standard input is empty
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a b 
a b c
https://ideone.com/xkmbmN
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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