Question

I am running g++(gcc version 3.4.4) on cygwin.

I can’t get this small snippet of code to compile. I included the appropriate headers.

int main(){

    std::string temp("asgfsgfafgwwffw");

    std::transform(temp.begin(),
                   temp.end(),
                   temp.begin(),
                   std::toupper);

    std::cout << "result:" << temp << std::endl;

    return 0;
}

I have not had any issues using STL containers such as vector.
Does anyone have any suggestions or insights into this situation.
Thanks.

Answer 1

This explains it quite well.

Which will boil down to this code:

std::transform(temp.begin(),temp.end(),temp.begin(),static_cast<int (*)(int)>(std::toupper));