How convert for loop to while loop?

I must convert that for loop to while loop. How can I do that? I tried somethings but I couldn't get right result.

A=zeros(5,8);
[r,c]=size(A);
%for loop
for i=1:r % loops over rows
    for j=1:c % loops over columns
        if i>j
            A(i,j)=4*i-2*j;
        elseif i<=j
            A(i,j)=i^2-3*j;
        end
    end
end
A

Answer 1

[KSSV]

A=zeros(5,8);
[r,c]=size(A);
%for loop
i = 0 ; 
while i<r % loops over rows
  i = i+1 ; 
  j = 0 ; 
  while j<c % loops over columns
    j = j+1 ; 
    if i>j
      A(i,j)=4*i-2*j;
    elseif i<=j
      A(i,j)=i^2-3*j;
    end
  end
end
A

[Hasan Berke Bankoglu]

Thank you very much. I guess I got it how to convert.

I have one more question about convert from for loop to while loop. I 'm going to try to convert it .

[KSSV]

Thanks is accepting the answer.....what is another question?

[Hasan Berke Bankoglu]

Other question is about exponential e. I submit it below. When I write code for while loop, I had to change a3 as 1 instead of 0. Nevertheless, I could get right result.

% a

% for loop k = 5

a3=0;

x=2;

k = 5

for n = 0:k

a3 = a3 + (x^n/factorial(n));

end

display(a3)

exp(2)

%while loop k = 5

a3=1;

x=2;

n=0;

k=5 % k = 5

while n<k

n = n+1;

a3 = a3 + (x^n/factorial(n));

end

display(a3)

exp(2)