Sir, i have a doubt in a code

#1

at 7:12, in line 111. Sir, apn ye if loop q lga rhe hain ? ->
if(!q,empty()){ q.push(NULL);}

#2

this is not a loop
it’s if condition

we are checking this so that we don’t stuck in infinite loop

we have to push NULL only if q is not empty
if q is empty and we again push NULL
then every time we pop null print endl and again push NULL
in this way loop runs infinitely

#3

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