[SKAzini]

Another tip:

Use loops instead of repeating the code 345834875 times.

Code:

stock ClearChat(playerid)
{
        SendClientMessage(playerid, -1, " ");
    SendClientMessage(playerid, -1, " ");
    SendClientMessage(playerid, -1, " ");
    SendClientMessage(playerid, -1, " ");
    SendClientMessage(playerid, -1, " ");
    SendClientMessage(playerid, -1, " ");
    SendClientMessage(playerid, -1, " ");
    SendClientMessage(playerid, -1, " ");
    SendClientMessage(playerid, -1, " ");
    SendClientMessage(playerid, -1, " ");
    SendClientMessage(playerid, -1, " ");
    SendClientMessage(playerid, -1, " ");
    SendClientMessage(playerid, -1, " ");
    SendClientMessage(playerid, -1, " ");
    SendClientMessage(playerid, -1, " ");
    SendClientMessage(playerid, -1, " ");
    SendClientMessage(playerid, -1, " ");
    SendClientMessage(playerid, -1, " ");
    SendClientMessage(playerid, -1, " ");
    SendClientMessage(playerid, -1, " ");
    SendClientMessage(playerid, -1, " ");
        return 1;
}

->

Code:

stock ClearChat(playerid)
{
	for(new i; i < 20; i++) SendClientMessage(playerid, -1, " ");
        return 1;
}