no overloaded function error while compiling web server client with gsoap - c++

Question

I am trying to use a Web service in my local. My server is written with C# and client c++ and gsoap. When I tried to compile my C++ code I am taking error below:
clientt.cpp
c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\INCLUDE\xlocale(323) :
warning C4530: C++ exception handler used, but unwind semantics are not
enabled. Specify /EHsc
clientt.cpp(8) : error C2661: 'WebService1SoapProxy::HelloWorld' : no
overloaded function takes 1 arguments
I think, that function must take 1 argument. What's wrong with that?
Commands I used:
wsdl2h.exe -s -o calc.h calc.wsdl
soapcpp2.exe -i calc.h
cl client.cpp
.NET Web Service Server Code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
namespace webServiceDnm
{
/// <summary>
/// Summary description for WebService1
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
// [System.Web.Script.Services.ScriptService]
public class WebService1 : System.Web.Services.WebService
{
[WebMethod]
public string HelloWorld()
{
return "Hello World";
}
}
}
C++ WEB Service Client Code:
/* CalcClient.cpp */
#include "soapWebService1SoapProxy.h"
#include "WebService1Soap.nsmap"
void main()
{
WebService1SoapProxy service;
char* result;
if (service.HelloWorld(result) == SOAP_OK)
std::cout<< result << std::endl;
else
service.soap_stream_fault(std::cerr);
}