msdn bind2nd功能示例

我在Windows 7 64位上使用msvs6.0和sp6。Win32控制台应用程序。仍然在VS 6.0上，因为我必须维护遗留代码。大多数vs6的东西工作没有问题。

我试图通过查看bind2nd来了解:https://msdn.microsoft.com/en-us/library/3f0defz2.aspx

代码在编译时失败，给出错误(其中包括):'iterator':使用类模板需要模板参数列表代码在

我如何纠正这段代码，使其编译?

代码

#include <vector>  
#include <functional> 
#include <algorithm> 
#include <iostream> 
using namespace std; 
// Creation of a user-defined function object that inherits from 
// the unary_function base class 
class greaterthan15: unary_function<int, bool> 
{ 
public: 
    result_type operator()( argument_type i ) 
    { 
        return ( result_type )( i > 15 ); 
    } 
}; 
int main() 
{ 
    vector<int> v1; 
    vector<int>::iterator Iter; 
    int i; 
    for ( i = 0; i <= 5; i++ ) 
    { 
        v1.push_back( 5 * i ); 
    } 
    cout << "The vector v1 = ( "; 
    for ( Iter = v1.begin(); Iter != v1.end(); Iter++ ) 
        cout << *Iter << " "; 
    cout << ")" << endl; 
    // Count the number of integers > 10 in the vector 
    // COMPILE FAILS ON NEXT LINE 
    vector<int>::iterator::difference_type result1a; 
    result1a = count_if( v1.begin(), v1.end(), bind2nd( greater<int>(), 10 ) ); 
    cout << "The number of elements in v1 greater than 10 is: " 
        << result1a << "." << endl; 
    // Compare counting the number of integers > 15 in the vector with 
    // a user-defined function object 
    vector<int>::iterator::difference_type result1b; 
    result1b = count_if( v1.begin(), v1.end(), greaterthan15() ); 
    cout << "The number of elements in v1 greater than 15 is: " 
        << result1b << "." << endl; 
    // Count the number of integers < 10 in the vector 
    vector<int>::iterator::difference_type result2; 
    result2 = count_if( v1.begin(), v1.end(), bind1st(greater<int>(), 10 ) ); 
    cout << "The number of elements in v1 less than 10 is: " 
        << result2 << "." << endl; 
}