How to do loops and execute values from graphs of bvp4c

Hi all. I have wrote a code, in which I want MATLAB to plot graphs of -W(eta) versus eta, for n=1 and n=1.1.

This is the code:

function Script4
n=1.0;
infinity=20;

solinit = bvpinit(linspace(0,infinity,30),[0 0 0 0 -1]);
sol = bvp4c(@(x,y)VK(x,y,n),@VKbc,solinit);
x = [0:2:20];
y = deval(sol,x);

figure

title('Plots of -W versus eta')
lines = {'b-','c-'};
ylabel('-W(eta)')
xlabel('eta')
drawnow
hold on

for i=1:2
  n = n+0.1;
  sol = bvp4c(@(x,y)VK(x,y,n),@VKbc,sol);
  fprintf('\n');
  fprintf('n \t-W \n');
  plot(sol.x,-sol.y(3,:),lines{i});

for k = 1:length(x)
    fprintf('%3.2f %8.4f\n', x(k),-y(3,k));
    drawnow
end

end
legend('n = 1.0','n=1.1',1); 

hold off

function yprime = VK(x,y,n)
a = ((1-n)/(n+1))*x;
c = (y(4)^2+y(5)^2)^((1-n)/(n+1));

yprime = [ c*y(4)
           c*y(5)
           -2*y(1) - a*c*y(4)
           y(1)^2 - (y(2)+1)^2 + (y(3)+a*y(1))*c*y(4)
           2*y(1)*(y(2)+1) + (y(3)+a*y(1))*c*y(5)
        ];
end

function res = VKbc(ya,yb)

res = [ya(1)
       ya(2)
       ya(3)
       yb(1)
       yb(2)+1
       ];

end

end

The problem is now,

1) Is this the right way to make loop for increasing the value of n? I want it start from n=1.0 increase by 0.1 up to 1.1.

for i=1:2
    n = n+0.1;
    sol = bvp4c(@(x,y)VK(x,y,n),@VKbc,sol);
    fprintf('\n');
    fprintf('n \t-Winfinity \n');
    plot(sol.x,-sol.y(3,:),lines{i});

end

2) Also, I want MATLAB to execute or give me values of -W(eta) from eta=0 to eta=20, for each n. Is that the right way to call it? I mean, look at the percent and number I placed. I look at somewhere, I just paste the way they write it on my problem without knowing what the meaning of %3.2 and %8.4. I dont think it is correct but I dont know how to call it.

for k = 1:length(x)
      fprintf('%3.2f %8.4f\n', x(k),-y(3,k)));
      drawnow
  end

Thank you in advance.