Thread: calling default instead of argument constructor, why?!

Code:

class String
{
 protected:
  enum {SZ = 80};
  char str[SZ];

 public:
  String() //this is being called from Pstring's else
  {str[0] = '\0';}

  String(char s[])
  {strcpy(str, s);}

  void display() const
  {cout << str;}

  operator char*()
  {return str;}
};

class Pstring: public String
{
 public:
  Pstring(char s[]);
};

Pstring::Pstring(char s[])
{
 if (strlen(s) > SZ-1)
 {
  //do something
 }

 else String(s); // this is calling String() and not String(char s[])!!
}

int main()
{
 Pstring test = "testing";
 test.display();
 return 0;
}

When I initialize test, it goes into Pstring's else statement which calls String(s), but instead of calling String(char s[]) it's calling the no argument constructor String() even though I'm sending it the argument (s)!! Why??