Octave while/for statement -- what's wrong in a code? -

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this octave code

    k= 1:10     while ( p < 1 )         ceil(log2(k))  +  1/(1-(1-p)^k) %function         p = p + sens;         k     endwhile;  endfor   k

and here output:

ans =  10.000 k =  1 ans =  5.0000 k =  1 ans =  3.3333 k =  1 ans =  2.5000 k =  1 ans =  2 k =  1 ans =  1.6667 k =  1 ans =  1.4286 k =  1 ans =  1.2500 k =  1 ans =  1.1111 k =  1 ans =  1 k =  1 k =  10

so, can see -- in inner while statement value of k fixed 1. supposed vary value between 1 , 10. why not working? have no idea why inner while statement proceed once.

answer: there should p= initial_value after for k=...

[even if find answer question yourself, should put in answer , accept it, question "officially" solved. have commented don't have enough reputation here]

answer: there should p= initial_value after for k=... is, this:

for k= 1:10   p=somevalue;   while ( p < 1 )   ...

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