Question

杭电acm2051为什吗错了啊？ http://acm.hdu.edu.cn/showproblem.php?pid=2051

#include <iostream>
using namespace std;
int main()
{
int n,m,a[1000],i,j;
while (cin>>n)
{
i=0;
a[i++]=n%2;
n=n/2;
for(j=i-1;j>=0;j--)
cout<<a[j];
cout<<endl;
}
}

Answer 1

#include <iostream>
using namespace std;
int main()
{
int n,m,a[1000],i,j;
while (cin>>n)
{
i=0;
while(n) // 要循环
{
a[i++]=n%2;
n=n/2;
}
for(j=i-1;j>=0;j--)
cout<<a[j];
cout<<endl;
}
}