/* ECP: FILEname=fig14_31.cpp */
/* 1*/   // Read a pointer to a shape.
/* 2*/   // Bare bones, with no error checking.

/* 3*/   istream & operator >> ( istream & Input, Shape * & S )
/* 4*/   {
/* 5*/       char Ch;
/* 6*/       double D1, D2;

/* 7*/       Input >> Ch;      // First character represents shape.
/* 8*/       switch( Ch )
/* 9*/       {
/*10*/         case 'c':
/*11*/           Input >> D1;
/*12*/           S = new Circle( D1 );
/*13*/           break;

/*14*/         case 'r':
/*15*/           Input >> D1 >> D2;
/*16*/           S = new Rectangle( D1, D2 );
/*17*/           break;

/*18*/         case 's':
/*19*/           Input >> D1;
/*20*/           S = new Square( D1 );
/*21*/           break;

/*22*/         default:
/*23*/           cerr << "Needed one of c, r, or s" << endl;
/*24*/           S = new Circle;      // Radius is 0.
/*25*/           break;
/*26*/       }

/*27*/       return Input;
/*28*/   }