hash_multimap::upper_bound

注意事項
這個 API 已經過時。這個選項是 unordered_multimap Class。

傳回 Iterator 置於一 hash_multimap 的第一個項目與指定的索引鍵大於的金鑰。

iterator upper_bound(
   const Key& _Key
);
const_iterator upper_bound(
   const Key& _Key
) const;

參數

• _Key
  引數索引鍵與項目的排序鍵比較要搜尋的 hash_multimap 的。

傳回值

處理一個項目位置在一 hash_multimap 與索引鍵比引數索引鍵的 iterator 大於或 const_iterator 或解決成功最後一個項目位置 hash_multimap，如果符合沒有為索引鍵中找到。

如果傳回值 upper_bound 指派給 const_iterator，無法修改 hash_multimap 物件。如果傳回值 upper_bound 指派給 iterator，可以修改 hash_multimap 物件。

備註

在 Visual C++ .NET Pocket PC， <hash_map> 和 <hash_set> 標頭檔 (Header File) 的成員不在 std 命名空間，，而是移至 stdext 命名空間。如需詳細資訊，請參閱 stdext 命名空間。

範例

// hash_multimap_upper_bound.cpp
// compile with: /EHsc
#include <hash_map>
#include <iostream>

int main( )
{
   using namespace std;
   using namespace stdext;
   hash_multimap <int, int> hm1;
   hash_multimap <int, int> :: const_iterator hm1_AcIter, hm1_RcIter;
   typedef pair <int, int> Int_Pair;

   hm1.insert ( Int_Pair ( 1, 10 ) );
   hm1.insert ( Int_Pair ( 2, 20 ) );
   hm1.insert ( Int_Pair ( 3, 30 ) );
   hm1.insert ( Int_Pair ( 3, 40 ) );

   hm1_RcIter = hm1.upper_bound( 1 );
   cout << "The 1st element of hash_multimap hm1 with "
        << "a key greater than 1 is: "
        << hm1_RcIter -> second << "." << endl;

   hm1_RcIter = hm1.upper_bound( 2 );
   cout << "The first element of hash_multimap hm1\n with a key "
        << " greater than 2 is: "
        << hm1_RcIter -> second << "." << endl;

   // If no match is found for the key, end( ) is returned
   hm1_RcIter = hm1.lower_bound( 4 );

   if ( hm1_RcIter == hm1.end( ) )
      cout << "The hash_multimap hm1 doesn't have an element "
           << "with a key of 4." << endl;
   else
      cout << "The element of hash_multimap hm1 with a key of 4 is: "
           << hm1_RcIter -> second << "." << endl;

   // The element at a specific location in the hash_multimap can be
   // found using a dereferenced iterator addressing the location
   hm1_AcIter = hm1.begin( );
   hm1_RcIter = hm1.upper_bound( hm1_AcIter -> first );
   cout << "The first element of hm1 with a key greater than"
        << endl << " that of the initial element of hm1 is: "
        << hm1_RcIter -> second << "." << endl;
}

需求

標題: <hash_map>

命名空間: stdext

請參閱

參考

hash_multimap Class

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