How to print this box in MatLab?

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Juan Zegarra
Juan Zegarra 2019-5-6
编辑： Adam Danz 2019-5-14
Hello can you please help me with the code for this box of Os' and Xs'? So far I've done this but I only print one line.
n=input('Enter length')
for i= 1:n
for j=1:n
if i==1||i==n
fprintf('x')
elseif 1==2 | 1==n-1
if j==1 |j==n
fprintf('x')
else
fprintf('o')
end
end
if(i==3)| (i==(n-2))
if j==2 |j==n-1
fprintf('o')
else
fprintf('x')
end
if i==1 | j==3 | j==n-2 | j==n
fprintf('x')
elseif j==2 | j==n-1
fprintf('o')
end
end
end
end
fprintf('\n')
Screen Shot 2019-05-06 at 8.27.00 AM.png
  1 个评论
dpb
dpb 2019-5-6
HINT: your only newline print statement is at the complete end of all code...

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回答（1 个）

Adam Danz
Adam Danz 2019-5-6
编辑：Adam Danz 2019-5-14
As dpb mentioned, you need to indicate when to move to the next line (which is only done at the very end of your code).
Here's an alternative I put together just for fun.
n = 10;
m = nan(n,n);
% loop through each of the 3 outer layers
for i = 1:3
m(i:n-i+1,i) = i; %left edge
m(i,i:n-i+1) = i; %top
m(end-i+1,i:n-i+1) = i; %bottom
m(i:n-i+1,end-i+1) = i; %right
end
% odd numbers become "x"s, even numbers become "o's and NaNs become empties
mcell = cell(size(m));
mcell(mod(m,2)==1) = {'x'};
mcell(mod(m,2)==0) = {'o'};
mcell(isnan(m)) = {' '};
% Print to command window as nxn char array
reshape(char(mcell),n,n)
Result:
ans =
10×10 char array
'xxxxxxxxxx'
'xoooooooox'
'xoxxxxxxox'
'xox xox'
'xox xox'
'xox xox'
'xox xox'
'xoxxxxxxox'
'xoooooooox'
'xxxxxxxxxx'

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