HDU-2051(bitset)

题目链接:https://vjudge.net/problem/HDU-2051

#include <iostream>
#include <cstdio>using namespace std;void DecToBin(int n)
{if(n == 0) return;DecToBin(n/2);printf("%d", n%2);
}
int main()
{int n;while(scanf("%d", &n) != EOF){DecToBin(n);cout << endl;}return 0;
}