재귀함수로 2진수 만들기

#include <stdio.h>
#include <iostream>
#include <algorithm>
#include <stack>
#include <vector>
#include <math.h>

using namespace std;

void recur(int x){
	if(x==0) return;
	recur(x/2);
	printf("%d", x%2);
}
int main() {
	//freopen("input.txt.txt","rt",stdin);
	int n;
	scanf("%d", &n);
	recur(n);
	
	return 0;	
}