operator<< (<bitset>)

插入个序列的文本表示形式输出到流中。

template<class CharType, class Traits, size_t N>
   basic_ostream<CharType, Traits>& operator<< (
      basic_ostream<CharType, Traits>& ostr,
      const bitset<N>& _Right
   );

参数

• _Right
  要插入到输出流作为字符串类型 bitset<N> 的对象。

返回值

个序列的文本表示形式在 ostr的。

备注

模板函数重载 operator<<，允许bitset被写出，而无需先将其转换为字符串。模板函数有效地执行:

ostr << _Right.to_string <CharType，Traits，allocator<CharType> > ( )

示例

// bitset_op_insert.cpp
// compile with: /EHsc
#include <bitset>
#include <iostream>
#include <string>

int main( )
{
   using namespace std;

   bitset<5> b1 ( 9 );

   // bitset inserted into output stream directly
   cout << "The ordered set of bits in the bitset<5> b1(9)"
        << "\n can be output with the overloaded << as: ( "
        << b1 << " )" << endl;

   // Compare converting bitset to a string before
   // inserting it into the output steam
   string s1;
   s1 =  b1.template to_string<char, 
      char_traits<char>, allocator<char> >( );
   cout << "The string returned from the bitset b1"
        << "\n by the member function to_string( ) is: "
        << s1 << "." << endl;
}

Output

The ordered set of bits in the bitset<5> b1(9)
 can be output with the overloaded << as: ( 01001 )
The string returned from the bitset b1
 by the member function to_string( ) is: 01001.

要求

标头: <bitset>

命名空间: std