改进后``` #include

using namespace std;

int b[100000000000]

int main()

{

int a,b=0,c=0,d;

cin>>a;
if(a=0)
   cout<<"no!";
if(a<0)
{
 a=abx(a)   
 while(a<2)
 {
     if(a%2==0)
     {
         a/=2;
         b[b]=0;
         b+=1;
     }
     else
     {
         a/=2;
         b[b]=1;
         b+=1;
     }
 }
 b+=1;
 b[b]=1;
 for(int i=b;i>=0;i--)
 {
     a[c]=a[b];
     c++;
 }
 cout<<"-";
 for(int i=0;i>=c;i++)
     cout<<a[i];
 return 0;
}      
if(a>0)
{
 while(a<2)
 {
     if(a%2==0)
     {
         a/=2;
         b[b]=0;
         b+=1;
     }
     else
     {
         a/=2;
         b[b]=1;
         b+=1;
     }
  }
  b+=1;
  b[b]=1;
  for(int i=b;i>=0;i--)
  {
      a[c]=a[b];
      c++;
  }
 for(int i=0;i>=c;i++)
     cout<<a[i];
 return 0;

}