jwSMTP example code

#include <iostream>
#include <jwsmtp/jwsmtp.h>

using std::cout;
using std::cin;
using std::string;

void Usage( ) {
     cout << "jwSMTP library demo program\n"
             "maildemo \n"
             " e.g.\n"
             " maildemo you@there.com me@here.com mail.here.com\n";
}

int main(int argc, char* argv[ ]) {
if(argc != 4) {
          Usage( );
return 0;
     }

     cout << "jwSMTP library demo program\n\n";
     string to(argv[1]);
     string from(argv[2]);
     string smtpserver(argv[3]);

char str[1024];
     cout << "Please enter the subject of the mail\n";
     cin.getline(str, 1024);
     string subject(str);
     strcpy(str, "");

     cout << "Please enter the message body\n";
     cin.getline(str, 1024);
     string mailmessage(str);

// This is how to tell the mailer class that we are using a direct smtp server
     // preventing the code from doing an MX lookup on 'smtpserver'
     jwsmtp::mailer mail(to.c_str( ),
                         from.c_str( ),
                         subject.c_str( ),
                         mailmessage.c_str( ),
                         smtpserver.c_str( ),
                         jwsmtp::mailer::SMTP_PORT,
false);

// using a local file as opposed to a full path.
     mail.attach("attach.png");

// boost::thread thrd(mail);
     // thrd.join( ); // optional
     // or:-
     mail.operator ( )( );
     cout << mail.response( ) << "\n";

return 0;
}