c++ - 我如何在内容保持关联的同时按字母顺序对结构数组进行排序

Question

struct Album {
  string title;
  string year;
  string track;
  vector<string> tracks;
}MyAlbums[5];


int j;
Album temp;
for(int i = 1; i < 5; i++)
{
  j = i - 1;
  while( j >= 0 && strcmp( MyAlbums[j+1].title[0], MyAlbums[j].title[0]) < 0 ){
    temp =  MyAlbums[j + 1];
    MyAlbums[j+1] = MyAlbums[j];
    MyAlbums[j] = temp;
    j--;
  }
}

给我这个:从'char'到'const char*'的无效转换[-fpermissive]

Answer 1

C++

struct Album {
  string title;
  string year;
  string track;
  vector<string> tracks;

  bool operator<(const Album &a) const
  {
      return title.compare(a.title) > 0;
  }
} MyAlbums[5];

std::sort(std::begin(MyAlbums), std::end(MyAlbums));

C++11

std::sort(std::begin(MyAlbums), std::end(MyAlbums), [](const Album &a1, const Album &a2 ){
    return a1.title.compare(a2.title) > 0;
});