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;}