sir I do not understand the for loop in sieve
for(j=i*i, j<1000000, j+=i)
how does it work?
Prime sieve eratosthenes
Hello @mzk1994 in this if the number is prime like 3 then we will mark its multiples starting from its square as 0.
It will start from 9 and go on as 9,12,15,18,21,24 all as 0
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