#include

using namespace std;

char *deletechar(char*inputstr,char *outputstr)

{

      char *deststr=outputstr;

      bool table[26]={false};

      int k=0;

      for (int i=0;i

      {

             char c=inputstr[i];

             if (table[c-'a']==false)

             {

                    outputstr[k++]=c;

                    table[c-'a']=true;

             }

      }

      outputstr[k]='';

      return deststr;

}

void main()

{

      char str1[]="aaaabdcadjoiufdjouj";

      char *deststr=new char[strlen(str1)+1];

      memset(deststr,0,strlen(str1)+1);

      cout<

}