How to check if my array is square with if and else loops?

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A = [1 -2 1;
0 2 -8;
-4 5 9]
How can I check if this array is a square array using an if-else loop?

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Chunru
Chunru 2022-5-4
A = [1 -2 1;
0 2 -8;
-4 5 9]
A = 3×3
1 -2 1 0 2 -8 -4 5 9
if ndims(A)==2 && (size(A,1)==size(A,2))
disp("A is Square")
end
A is Square

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