Unable to understand the logic!

#1

Totally confused in logic part that is , in that nested loop part , please clear it sir

#2

hello @piyushkumar999999

the inner loop is for precision, in that loop we keep adding inc (which is 1 initaillly) to our ans till ans*ans <=n and
in next interation we are dividing our inc by 10 that now inc is 0.1 , and repeating the same procedure again. we are doing this procedure p times to get square root upto p digit precision

#3

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#4

The above code is quite basic
Say we have precision 1 then
Say we have to find sqrt of 10
Then we check 1*1<=10 increment
2*2<=10 we increment
3*3<=10 we increment
Now 4*4>10 so we stop for current p=0 and do ans-precision
now p=1 so we divide 1 by 10 which is 0.1
So
3.1*3.1=9.61
3.2*3.2=10.24 which is greater than 10
so we do 3.2-0.1 =3.1 and we stop for p=1

Hence ans =3.1