double g()  ;

void foo() {
   double x1, x2, x3, x4, x5, x6, x7, x8, x9 ;
   double y ;

   y = (x1 + 1.2) + ((x2 + 1.3) + ((x3 + 1.4) + ((x4 + 1.5)
      + ((x5 + 1.6) + ((g() + 1.7) + ((x7 + 1.8) + ((x8 + 1.9) + (x9 +
	  2.0)))))))) ;
}