#include <iostream>
#include <string>
 
class char_traits : public std::char_traits<char>
{
public:
    // не забываем про нужные typedef'ы
 
    static int compare(const char *left, const char *right, size_t length)
    {
        // тут сравниваем 2 строки
        std::cout << "HERE" << std::endl; 
 
        return 0;
    }
};
 
typedef std::basic_string<char, char_traits> string;
 
int main()
{
    string str1("one"), str2("two");    
    std::cout << std::boolalpha << (str1 == str2) << std::endl;
 
    return 0;
}
 

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