将一个十进制数转换成二进制输出--递归实现

#include <iostream>

using namespace std;

void WriteBinary(int n)
{
if(n==0||n==1)
cout<<n;
else
{
WriteBinary(n/2);
cout<<n%2;
}
}
int main()
{
cout << "Hello world!" << endl;
WriteBinary(12);
return 0;
}