var_checker.m

expected_vars = ["movies", "users_movies", "users_movies_sort", "index_small", "trial_user", "m", "n", "ratings", "m1", "n1", "eucl", "MinDist", "DistIndex", "closest_user_Dist", "ratings_cent", "trial_user", "pearson", "MaxPearson", "PearsonIndex", "closest_user_Pearson",];
 
all_defined =1;
for i = 1:length(expected_vars)
    test_var = expected_vars(i);
    if exist(test_var) == 0
        all_defined = 0;
        fprintf("%s is not defined\n", test_var);
    end
end