How to get file extension from string in C++

Question

Given a string \"filename.conf\", how to I verify the extension part?

I need a cross platform solution.

Answer 1

Or you can use this:

    char *ExtractFileExt(char *FileName)
    {
        std::string s = FileName;
        int Len = s.length();
        while(TRUE)
        {
            if(FileName[Len] != '.')
                Len--;
            else
            {
                char *Ext = new char[s.length()-Len+1];
                for(int a=0; a

This code is cross-platform