[JaTochNietDan]

No need for sscanf in this situation. Although your sscanf syntax is wrong anyway, it should be:

pawn Код:

if(sscanf(params,"s",reason))

But really you don't need it here, just this:

pawn Код:

dcmd_die(playerid,params[])
{
   new string[128],name[25];
   if(!strlen(params)) SendClientMessage(playerid,red,"Usage: /die [reason]");
   else
   {
       GetPlayerName(playerid,name,sizeof(name));
       format(string,sizeof(string),"%s killed himself reason: %s",name,params);
       SendClientMessageToAll(white,string);
       SetPlayerHealth(playerid,0);
   }
   return 1;
}