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

A NET/CLI version using System::String

   System::String^ GetFileExtension(System::String^ FileName)
   {
       int Ext=FileName->LastIndexOf('.');
       if( Ext != -1 )
           return FileName->Substring(Ext+1);
       return "";
   }