Converting DECIMAL to BINARY

 #include<bits/stdc++.h>

using namespace std;

#define file() freopen("in.txt","r",stdin)

#define IO ios_base::sync_with_stdio(false),cin.tie(0)

int main()

{

int n;

cin>>n;

for(int c=31;c>=0;c--)

{

int k=n>>c;

if(k&1) {

cout<<1;

}

else cout<<0;

}

cout<<endl;

return 0;

}