[ask]how to make a command

Jimmy_Aquarius wrote:

hello
i want to ask how to make a command like /ann ?
if /ann, it will broadcast to all user.
but if /ann1, it will message to a person

i use command: /ann1 Hello.. How are you ?
you whisper to BOT: Hello.. How are you ?

this is my code

static int _handle_ann1_command(t_connection * c, char const *text)
{
  unsigned int i;
  for (i=0; text[i]!=' ' && text[i]!='\0'; i++); /* skip command */
  for (; text[i]==' '; i++);

if (text[i]=='\0')
  {
    message_send_text(c,message_type_info,c,"usage: /ann1 <text>");
    return 0;
  }

    snprintf(msgtemp, sizeof(msgtemp), "BOT");
    do_whisper(c,msgtemp,"%.128s",&text[i]);
    return 0;
    }

but when i use like this..
it will says "

1>..\..\..\src\bnetd\command.cpp(616) : error C2660: 'pvpgn::bnetd::do_whisper' : function does not take 4 arguments

1>..\..\..\src\bnetd\command.cpp(840) : warning C4146: unary minus operator applied to unsigned type, result still unsigned

please correct my code

Thanks~

std::sprintf(bot,"Zeloit");