Pointers

Fill in the blanks in line A and B, to assure the printed output is "foo" 

  1. package main
  3. type S struct {
  4.     m string
  5. }
  7. func f() *S {
  8.     return __ //A
  9. }
  11. func main() {
  12.     p := __    //B
  13.     print(p.m) //print "foo"
  14. }

Answer

  2. package main
  4. type S struct {
  5.     m string
  6. }
  8. func f() *S {
  9.     return &S{"foo"} //A
  10. }
  12. func main() {
  13.     p := *f()  //B
  14.     print(p.m) //print "foo"
  15. }
  16.