Need help finding error in code

I have attached the m-file.

[KSSV]

You should attach the code, not screen shot.

[Walter Roberson]

You should also include a copy of the error message.

[James Cook]

I have deleted the screenshots and attached the m-file.

Answer 1

[KSSV]

            clc; clear all ;
            % The purpose of this script is to compute the probability of Paula 
            % winning a game in the ECE103 tennis assignment.
            % Givens: -Paula has won 154/230 points when she serves
            %         -the scoring rules of tennis
            % Plan: simulate a large number of tennis games, where Paula has a
            % 154/230 chance of winning each point

            %%Inputs
            f_Paula = 154/230;      % The fraction indicating the chance of Paula winning a point
            n_games = 5;            % the number of games you want to simulate
            points_to_win = 7;      % the number of points required to win a game

            %%declare initial conditions
            games_P = 0;    % number of games that Paula has won
            games_A = 0;    % number of games that Aaron has won

            tot_points_P = 0;   % total number of points Paula won
            tot_points_A = 0;   % total number of points Aaron won

            %%run simulations, one game at a time
            for gg = 1:n_games      % simulate the number of games requested

                % at start of each game, change Paula and Aaron's scores to 0
                score_P = 0;
                score_A = 0;

                game_over = 0;  % this will change to 1 once the game is over

                % keep simulating game if it is in't over
                while game_over == 0
                    prob = rand();    % randomly decide if Paula wins the point
                    if rand<f_Paula
                        score_P = score_P + 1;      % if Paula wins, add 1 to her score
                        tot_points_P = tot_points_P + 1;
                    else
                        score_A = score_A + 1;      % if Paula loses, add 1 to Aaron's score
                        tot_points_A = tot_points_A + 1;
                    end

                    % decide if the game is over (someone has scored at least 4 points
                    % and is winning by at least 2)
                    max_score = max(score_P, score_A);  % see what the leading score is
                    score_diff = abs(score_P-score_A);    % see what the score difference is
                    game_over = (max_score>=points_to_win && score_diff>=2);    % is 0 if game should continue, 1 if it should end
                end

                % once game is over, tally up who won the game
                if score_P > score_A
                    games_P = games_A + 1;  % if Paula wins, add to her total games won
                else
                    games_A = games_A + 1;  % if Aaron wins, add to his total games won
                end
            end

            %%Wite out the number of games Paula wins
            perc_P = 100*games_P/n_games;
            % write_out = ['Paula won ',num2str(perc_P),'% of ',num2str(n_games),' games played'];
            % disp(write_out)
            fprintf('Paula won %f of %d games played\n',perc_P,n_games);

            %%Wite out the number of points Paula wins
            tot_points = tot_points_P + tot_points_A;
            perc_P = 100*tot_points_P/tot_points;
            % write_out = ['Paula won ',num2str(perc_P),'% of ',num2str(tot_points),' points played'];
            % disp(write_out)
            fprintf('Paula won %f of %d games played\n',perc_P,tot_points);