How to make matrix dimensions agree

I am trying to make a blackjack game and have gotten to where it is almost user-friendly.

%BlackJack single player game 
clear; clc;
deck = [11 11 11 11 2 2 2 2 3 3 3 3 4 4 4 4 5 5 5 5 6 6 6 6 7 7 7 7 8 8 8 8 9 9 9 9 10 10 10 10]; %assume all aces are worth 11
dealercount = 0;
playercount = 0;
playercard1 = deck(randperm(length(deck),1));
playercard2 = deck(randperm(length(deck),1));
playercard3 = deck(randperm(length(deck),1));
playercard4 = deck(randperm(length(deck),1));
dealercard1 = deck(randperm(length(deck),1));
dealercard2 = deck(randperm(length(deck),1));
dealercard3 = deck(randperm(length(deck),1));
dealercard4 = deck(randperm(length(deck),1));
 
if dealercount < 21
    dealercount = dealercard1;
end
 
fprintf('What would you like to do? Hit or Stand?')
    playerchoice = input('','s')
    if playerchoice  == 'Hit'
        playercount = playercard1
    else playerchoice == 'Stand'
        playercount = playercount
    end

When the player inputs Hit it works, but when they input Stand it says:

Matrix dimensions must agree.
Error in BlackJack (line 22)
    if playerchoice  == 'Hit'

How do I fix this?

Answer 1

[David Hill]

fprintf('What would you like to do? Hit or Stand?')
    playerchoice = input('','s')
    if playerchoice  == 'Hit'
        playercount = playercard1
    elseif playerchoice == 'Stand'%you need elseif, otherwise you are executing the logical statement
        playercount = playercount
    end

[Tatiana Morales]

Even with elseif if comes up with the same error. I'm not sure why

[David Hill]

You need to use isequal

fprintf('What would you like to do? Hit or Stand?')
    playerchoice = input('','s')
    if isequal(playerchoice,'Hit')
        playercount = playercard1
    elseif isequal(playerchoice,'Stand')
        playercount = playercount
    end

[David Hill]

Look at what is produced when you code:

'Pass'=='Stop'

It is a logical operation looking at each element of the character array.The character arrays have to be the same length or else you will get that error.