struct vector push_back C++

Question

У меня возникла проблема выяснить, как использовать функцию push_back для перемещения элементов массива структуры в вектор TeamV.

Вот код, я до сих пор:

const int MEMBERS = 3; 
const int TEAM_NUM = 4; 

struct TeamS 
{ 
    int ID_NUM; 
    string team_members; 
}; 


int main() 
{ 
    int arrayS = 0; 
    const int ID[TEAM_NUM] = { 123, 321, 456, 789 }; 
    const string TEAM [TEAM_NUM][MEMBERS] = 
    { 
     { "Sarah", "Joe", "John" }, 
     { "Chris", "Kevin", "James" }, 
     { "Tom", "Kim", "Emily" }, 
     { "Jill", "Jason", "Jim" } 
    }; 
    vector <TeamS> TeamV; 
    Initialize(TeamV, ID, TEAM, arrayS); 

    return 0; 
} 



void Initialize(vector <TeamS> & TeamV, const int Id[], const string m[][MEMBERS], int arraysize) 
{ 
    cout << "Starting initialization" << endl; 
    for (arraysize; arraysize < TEAM_NUM; arraysize++) 
    { 
     TeamV.push_back(???) 
     TeamV [arraysize].ID_NUM = Id[arraysize]; 
     TeamV [arraysize].team_members = m[arraysize][MEMBERS]; 

    } 
    cout << "Ending initialization" << endl; 
} 

Спасибо заранее.

Answer 1

• Во-первых, вам нужно изменить TeamS, чтобы иметь список string с для членов команды, а не только один string.

  struct TeamS 
  { 
      int ID_NUM; 
      std::vector<string> team_members; 
  }; 
  

• В функции инициализации teamV:

  void Initialize(vector <TeamS> & TeamV, const int Id[], const string m[][MEMBERS], int arraysize) 
  { 
      cout << "Starting initialization" << endl; 
      for (arraysize; arraysize < TEAM_NUM; arraysize++) 
      { 
       // Create an instance of TeamS and flesh out its contents. 
       TeamS team; 
       team.ID_NUM = Id[arraysize]; 
       for (int i = 0; i < MEMBERS; ++i) 
       { 
       team.team_members.push_back(m[arraysize][i]); 
       } 
  
       // Now add the TeamS to TeamV. 
       TeamV.push_back(team); 
      } 
      cout << "Ending initialization" << endl; 
  } 
  

  Вы можете взять немного другой подход, при котором вы добавляете пустой TeamS к TeamV и конкретизировать содержание элемента уже в TeamV.

  void Initialize(vector <TeamS> & TeamV, const int Id[], const string m[][MEMBERS], int arraysize) 
  { 
      cout << "Starting initialization" << endl; 
      for (arraysize; arraysize < TEAM_NUM; arraysize++) 
      { 
       // Add an tempy TeamS to TeamV. 
       TeamS team; 
       TeamV.push_back(team); 
  
       // Flesh out its contents of the element in TeamV. 
       TeamV[arraysize].ID_NUM = Id[arraysize]; 
       for (int i = 0; i < MEMBERS; ++i) 
       { 
       TeamV[arraysize].team_members.push_back(m[arraysize][i]); 
       } 
      } 
      cout << "Ending initialization" << endl; 
  }