[RESOLVED] template function in non-template class

[2kaud]

It wants to use template function when string argument is passed. But I have already overloaded the function with separate string argument, so why doesn't it use that?

The template function will match any constructor call. Hence it has matched the template with type char[2]. What you need to do is to have an explicit template specialisation(s) for when you don't want the normal template to apply. Consider

template<>
BigInt::BigInt(const std::string& str)
{
...
}

Note that this will also apply to the copy constructor.