Переделать программу с использованием шаблона класса

class ttt
{
    char *str;
 
public:
    ttt();
    bool operator >= (ttt &obj);
    bool operator <= (ttt &obj);
    bool operator == (ttt &obj);
    bool operator != (ttt &obj);
    bool operator << (char ch);
    bool operator - (char *s);
    friend ttt &operator + (ttt &A, ttt &B);
    friend ostream &operator << (ostream &out, ttt obj);
    friend istream &operator >> (istream &in, ttt obj);
};
 
ttt :: ttt()
{
   str=new char [100];
}
ttt &operator + (ttt &A, ttt &B)
{
   ttt S;
   delete [] S.str;
   S.str=new char[(A.str[0]+B.str[0]+1)];
   int i;
   for(i=0; i<=A.str[0]; i++)
   {
      S.str[i]=A.str[i];
   }
   for(i=0; i<=B.str[0]; i++)
   {
      S.str[i+strlen(A.str)]=B.str[i];
   }
   cout<<S;
   return S;
            }
bool ttt::operator <=(ttt &obj)
{
   if (strlen(str)<=strlen(obj.str)) return true;
   else return false;
 
}
   bool ttt::operator >=(ttt &obj)
       {
   if(strlen(str)>=strlen(obj.str)) return true;
   else return false;
}
 
bool ttt::operator ==(ttt &obj)
{
   if(strlen(str)==strlen(obj.str)) return true;
   else return false;
}
 
bool ttt::operator !=(ttt &obj)
{
   if(strlen(str)!=strlen(obj.str)) return true;
   else return false;
}
bool ttt::operator <<(char ch)
{
   int i, n=0;
   for(i=0; i<=strlen(str); i++)
   {
      if(str[i]==ch) return true;
      else n++;
   }
   if(n==i) return false;
}
 
bool ttt::operator - (char *s)
{
    int s1;
    char *sr;
    sr = strstr(str, s);
    s1 = strlen(s);
    strncpy (sr,sr +s1,sizeof(str)-(sr-str));
    cout<<str<<endl;
}
 
 
ostream &operator << (ostream &out, ttt obj)
{
   out<<obj.str<<endl;
   return out;
}
istream &operator >> (istream &in, ttt obj)
{
   cout<<"Vvedite strok:  ";
   in>>obj.str;
   return in;
}
 
 
int main()
{
      ttt A,B;
      cin>> A;
      cin>> B;
   cout<<"\n\t Peregryzka operator >= ."<<endl;
      if(A>=B) cout<<"A >= B"<<endl;
      else cout<<"A < B"<<endl;
 
   cout<<"\n\t Peregryzka operator <= ."<<endl;
      if(A<=B) cout<<"A <= B"<<endl;
      else cout<<"A > B"<<endl;
 
   cout<<"\n\t Peregryzka operator == ."<<endl;
      if(A==B) cout<<"A == B"<<endl;
      else cout<<"A != B"<<endl;
 
   cout<<"\n\t Peregryzka operator != ."<<endl;
      if(A!=B) cout<<"A != B"<<endl;
      else cout<<"A == B"<<endl;
 
   char ch;
      cout<<"\n\t Peregryzka operator << ."<<endl;
      cout<<"Vvedite simvol: "; cin>>ch;
      if(A<<ch) cout<<"Simvol vxodit v 1-y stroky"<<endl;
      else cout<<"Simvol NE vxodit v 1-y stroky"<<endl;
 
      cout<<"\n\t Peregryzka operator + ."<<endl;
      A+B;
 
      char s[20];
      cout<<"\n\t Peregryzka operator - ."<<endl;
      cout<<"Vvedite (pod)stroky 1 stroki: "; cin>>s;
      if(A-s) cout<<"(pod)stroka ydalilas'"<<endl;
 
      getch ();
      return 0;
}