Square_root very large number in C to <1000

Question

I have a very large number:

char *big_numbr_str = "4325242066733762057192832260226492766115114212292022277";

I want to keep the square rooting of this number until it is <1000. In PHP, I can do this relatively easily:

while($num > 1000):
    $num = sqrt($num);
endwhile;

$num = floor($num);

Now I am trying to achieve the same result in C to end the same result. For reference, after 5 cycles in the while loop, the final PHP result from the above snippet + start number is 50; If you twist this number 5 times in another place, you should get a similar result, rounded down.

How can I achieve the same in simple C? It seems that storing that amount in C is more than expected.

Answer 1

. Linux GMP.

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Answer 2

(4325242066733762057192832260226492766115114212292022277), array of integers, . . (, ).

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