I have a code but it keep saying "invalid expression. when calling a function or indexing a variable, use parentheses. otherwise check for mismatched delimiters

The was working fine and showing the charts and all

prob = RollingDice()

prob = 1×12

0 0 0 1.0000 0 0 0.6667 0.3333 0 0.1667 0.8333 0

function prob = RollingDice(~) % calculate the probability...
% of obtaining a # combination...
% between 1 and 12
n = 12; % total number of side between both dice
TNrolls = 0;
prob = zeros(1,12); % define a probability between 1 and 12 
while TNrolls < n % total is greater than 1 in order to...
    % get a number bigger than 0 
    dice(1) = randi(6); % the number of sides 
    dice(2) = randi(6); 
    Sum = dice(1) + dice(2); % sume represents the...
    % the #'s from each dice
    TNrolls = TNrolls + 2; % for every roll, we add +2...
    % to the total for the # of dice 
    
    if Sum == 2
        prob(2) = TNrolls/n; % depending on the # of roll it takes...
        % obtain a sum of 2, is divides by total
        % number of possible sides = 12
    elseif Sum == 3
        prob(3) = TNrolls/n;
    elseif Sum == 4
        prob(4) = TNrolls/n;
    elseif Sum == 5
        prob(5) = TNrolls/n;
    elseif Sum == 6 
        prob(6) = TNrolls/n;
    elseif Sum == 7 
        prob(7) = TNrolls/n;
    elseif Sum == 8 
        prob(8) = TNrolls/n;
    elseif Sum == 9 
        prob(9) = TNrolls/n;
    elseif Sum == 10 
        prob(10) = TNrolls/n;
    elseif Sum == 11 
        prob(11) = TNrolls/n;
    elseif Sum == 12 
        prob(12) = TNrolls/n;
    end
end
bar(prob)
xlabel('Sum for Roll') 
ylabel('Frequency') 
title(['Number of Rolls: ',num2str(Sum)])
end

[Torsten]

The code works. Although I don't know if the results are correct.

Answer 1

[Voss]

It runs without error and shows a plot.

Probably there's a syntax error in a nearby part of your code.

prob = RollingDice()

prob = 1×12

0 0 0 0 0.6667 1.0000 0.3333 0 0.5000 0 0 0.8333

function prob = RollingDice(~) % calculate the probability...
                               % of obtaining a # combination...
                               % between 1 and 12
n = 12; % total number of side between both dice
TNrolls = 0;
prob = zeros(1,12); % define a probability between 1 and 12 
while TNrolls < n % total is greater than 1 in order to...
                      % get a number bigger than 0 
    dice(1) = randi(6); % the number of sides 
    dice(2) = randi(6); 
    Sum = dice(1) + dice(2); % sume represents the...
                                        % the #'s from each dice
    TNrolls = TNrolls + 2; % for every roll, we add +2...
                                   % to the total for the # of dice 
    
    if Sum == 2
    prob(2) = TNrolls/n; % depending on the # of roll it takes...
                             % obtain a sum of 2, is divides by total
                             % number of possible sides = 12
    elseif Sum == 3
        prob(3) = TNrolls/n;
    elseif Sum == 4
        prob(4) = TNrolls/n;
    elseif Sum == 5
        prob(5) = TNrolls/n;
    elseif Sum == 6 
        prob(6) = TNrolls/n;
    elseif Sum == 7 
        prob(7) = TNrolls/n;
    elseif Sum == 8 
        prob(8) = TNrolls/n;
    elseif Sum == 9 
        prob(9) = TNrolls/n;
    elseif Sum == 10 
        prob(10) = TNrolls/n;
    elseif Sum == 11 
        prob(11) = TNrolls/n;
    elseif Sum == 12 
        prob(12) = TNrolls/n;
    end
end
bar(prob)
xlabel('Sum for Roll') 
ylabel('Frequency') 
title(['Number of Rolls: ',num2str(Sum)])
end