class String {

 public:

     String(char* pp) :sz(strlen(pp)), p(new char[sz+]) { strcpy(p,pp); }

     ~String() { delete[] p; }

     char& operator[](int i) { return p; }

 private:

     int sz;

     char* p;

 };  

 void f(char* x)

 {

     String s1(x);

     String s2 = s1;

 }