用递归实现十进制转换为二进制

#include <stdio.h>
void zhuanhuan(int i)
{
    int b;   
    b = i%2;
    if(i<2)
    {
        printf("%d",b);
    }
    else
    {
        i = i/2;
        zhuanhuan(i);
        printf("%d",b);
    }
}

int main(void)
{
    int i = 0;
    scanf("%d",&i);
    int a = 2;
    zhuanhuan(i);
    return 0;
}