how to consume wsdl web service using gsoap in c++

I am creating a login form for that, for the validation purposes i need to consume 1 particular web service. I am using Gsoap to call that web service , I followed all the steps and its generate .h files as well as all those stubs for the client side program. but the problem is when i consume some demo web services like calculator, currency convertor , then i can successfully compile all those generated file in visual studio 2015. But the Web service I need to consume when i do this  I can not compile those generated files successfully. if you know any other way then please let me know.