Euler's Method plot?

i'm having some trouble coding a eulers method code and creating a plot. here is what i have so far. how can i do the code for run_eulers_method and plot_results? sorry for english

function [] = L12_Q03 ()

   y = @(t) −t* cos(t − 1) + t
   f = @(t,w) t *sin(t − 1) + w/t
   y1 = 0;
  w1 = 0;
  t1 = 1;
  tn = 10;
  get_step_size(); 
  run_eulers_method();
  
end 


function [] = get_step_size()

 h = input('Enter a step size h: ');

      while h <=0 || abs(h - floor(h)) > 1e-8

            fprintf('Invalid entry %d \n', steps);
            h = input('Enter a step size h: ');

      end 

end


function [] = run_eulers_method(y,f,h, ,t1, tn, w1)

t = t1:h:tn;
wnext = w1 + h*f(t1,w1)
e = abs(y1 - w1);
fprintf('The average absolute error in the approximation is %0.5f \n', e);
plot_results();


end

function [] = plot_results(y,t1, h, tn, t, w)



  figure(1);
  clf;
  plot(1:y, w, 'ob');
  xlabel('Time');
  ylabel('Function Value');
  print('-dpng', 'newtons_method_approx.png');
  





end

[darova]

You have to learn how functions work

clc, clear
h = get_step_size();
disp(h)


function h = get_step_size()
h = input('Enter a step size h: ');
while h <=0 || abs(h - floor(h)) > 1e-8
    fprintf('Invalid entry %d \n', steps);
    h = input('Enter a step size h: ');
end 
end