贴个代码

   1: static A arr[] = 

   2: {

   3:     1, 1.1, 2,

   4:     2, 2.2, 3,

   5:     3, 3.3, 4

   6: };

   7:   

   8: int main() 

   9: { 

  10:          //cout << sizeof(arr)/sizeof(arr[0]) << endl;

  11:  

  12:     std::multimap<std::string, int> uuMap;

  13:     typedef std::multimap<std::wstring, int>::iterator Iter;

  14:  

  15:     uuMap.insert(std::make_pair(L"zhang", 1));

  16:     uuMap.insert(std::make_pair(L"ac", 1));

  17:     uuMap.insert(std::make_pair(L"d", 1));

  18:     uuMap.insert(std::make_pair(L"aa", 1));

  19:     uuMap.insert(std::make_pair(L"ab", 1));

  20:  

  21:     LPCWSTR pstr = L"zh";

  22:  

  23:     Iter iter = uuMap.lower_bound(pstr);

  24:     cout << iter->first << endl;

  25:     //std::pair<Iter, Iter> pos = uuMap.equal_range("aa");

  26:  

  27:     

  28:     return 0; 

  29: }