a034. 二進位制轉換

#include<iostream>
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using namespace std;

int main()
{
    int in;
    while(cin>>in)
    {
        string ans;
        while(in>0)
        {
            if(in%2!=0)
            {
                ans='1'+ans;
            }
            else
            {
                ans='0'+ans;
            }
            in/=2;

        }
        cout<<ans<<endl;
    }
}