Use of in bulid fxn

#1

I am using in build function __builtin__popcount(n);
in a loop but its giving zero for infinite time i guess why so!?

#2

Hello @raj_pareek please share your code so that i can check.

#3

#include<bits/stdc++.h>
using namespace std;
int main() {
int q;
cin>>q;
while(q–)
{
int a,b;
cin>>a>>b;
int ans=0;

    for(int i=a;i<=b;i++)
    {
        ans+=(__builtin_popcount(i));
    }

    cout<<ans<<endl;
}

return 0;
}

#4

Hello @raj_pareek i have corrected and commented the code :


Happy Learninng!!

1 Like
#5

why we have to do that??
int h=i;

#6

@raj_pareek i was just checking that there is no need of it.
you can do that in you way also. but what i havecommented is the correction.

#7

actually i was doing q-- already.
well thanks my issue is resolved.

#8

if your issue is resolved please mark this doubt as resolved.
Happy Learning!!

#9

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