random(number);

random(10);

random(number) + 1;

stock randomEx(min, max)
{    
    //Credits to ******    
    new rand = random(max-min)+min;    
    return rand;
}

CMD:lotto(playerid, params[])
{
    new rand = random(10) + 1; // As i said above
    new number; // a new variable Named "number" to store the data of the input the player typed.
    
    if(sscanf(params,"i", number)) // sscanf.
    {
         SendClientMessage(playerid, 0xFF0000AA, "/lotto [1-10]"); // if the player typed a Not-Numeric Number, it shows this msg (even if he didnt type a thing)
    }
    else // if he didnt make a mistake in typing the code, it passes the code.
    { 
        if ( number > 10 || number < 1)  // if he typed /lotto 11 or /lotto 0 or /lotto 1243
        {
            SendClientMessage(playerid, 0xFF0000AA, "choose a number From 1-10"); // the error message.
        }
        else // If his number is between 1 and 10, it passes the code.
        {
            if (number == rand)  // If he won, if the randomly generated number is   same as the number he typed.                        
            {
                SendClientMessage(playerid, 0x33AA33AA, "You won it!!");// Winner message.
                GivePlayerMoney(playerid, 1000000); // Cash  (i am rich, i will give 1m :P)
                SetPlayerScore(playerid, GetPlayerScore(playerid) + 1); // score for winning.
            }
            else
            {
                if( number != rand) // If his number is not same as the number which is randomly generated.
                {
                    SendClientMessage(playerid, 0xFF0000AA, "You Lost"); // Loser message.
                }
            }
        }
    }
    return 1;
}