С / С++ Есть ли аналоги strstr() ?

Console::WriteLine(Convert::ToString("abcdef")->Contains("bcd"));

if(strstr(s1,s2))
{
   // found
}

if (str1.find(str2) == std::string::npos)
  std::cout << "not found\n";
else
  std::cout << "found\n';

bool Contains(std::string s1, std::string s2) { return s1.find(s2) == std::string::npos; }

#include <iostream>
 
template<typename StrType1, typename StrType2>
constexpr bool contains(StrType1 && s1, StrType2 && s2)
{
    return std::forward<StrType1>(s1).find(std::forward<StrType2>(s2)) != std::remove_reference_t<StrType1>::npos;
}
 
int main()
{
    std::cout << "Hello, world!\n";
    
    std::string s1;
    std::wstring ws1;
    std::string s2 = "123";
    std::wstring ws2 = L"123";
    
    std::cout << std::boolalpha;
    
    std::cout << contains(s1, "123") << "\n";
    std::cout << contains(ws1, L"123") << "\n";
    std::cout << contains(s2, "123") << "\n";
    std::cout << contains(ws2, L"123") << "\n";
    std::cout << contains(std::string("123"), "123") << "\n";
    std::cout << contains(std::wstring(L"123"), L"123") << "\n";
}