[ReneG]

example

pawn Code:

CMD:command(playerid, params[])
{
    switch(random(2))
    {
        case 1:
            SendClientMessage(playerid, -1, "Success!");
            
        default:
            SendClientMessage(playerid, -1, "Failed!");
    }
    return 1;
}

random(2) - %50 percent chance of succeeding
random(3) - %33 percent chance of succeeding
random(4) - %25 percent chance of succeeding
random(5) - %20 percent chance of succeeding

etc.

Heres a page on switch statements in case you don't know how to use them.
http://wiki.amxmodx.org/Pawn_Tutorial#Switch_Statements