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Why wrong?

Posted by ecjtuyushuangjian at 2006-09-09 20:59:16 on Problem 1047
#include<iostream>
#include<stdio.h>
#include<string>
using namespace std;
char ch[61];
int main()
{int i,flag,c[61],l,sh[61],L,j,a[3],f;
 while(scanf("%s",ch)!=EOF)
 {flag=f=1;
  l=strlen(ch);L=l+1;
   for(i=0;i<l;i++)
   {if(ch[i]!='0'){f=0;break;}
   }//cout<<f<<endl;
   if(f==1)goto pp;
  for(i=1;i<=l;i++)c[i]=ch[i-1]-'0';
  a[1]=L/10;a[2]=L%10;
  for(i=0;i<=l+1;i++)sh[i]=0;
  for(i=1;i<=l;i++)
	for(j=1;j<3;j++)
	 sh[i+j-1]+=a[j]*c[i];
  for(i=1;i<=l+1;i++)
  {if(sh[i]>9)
  {sh[i-1]+=sh[i]/10;
   sh[i]%=10;
  }
  }
  for(i=2;i<=l+1;i++)
  {//cout<<"sh["<<i<<"]="<<sh[i]<<endl;
  if(sh[i]!=9){flag=0;break;}
  }
  pp:;
  if(flag==0)cout<<ch<<" is not cyclic"<<endl;
  else cout<<ch<<" is cyclic"<<endl;
 }//while
 return 0;
}
/*
Sample Input


142857
142856
142858
01
0588235294117647


Sample Output


142857 is cyclic
142856 is not cyclic
142858 is not cyclic
01 is not cyclic
0588235294117647 is cyclic


Source

*/

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