Sams Teach Yourself C++ in 21 Days

15: };

16:

17: void setValue(Animal& theAnimal, int theWeight)

18: {

19: friend class Animal;

20: theAnimal.itsWeight = theWeight;

21: }

22:

23: int main()

24: {

25: Animal peppy;

26: setValue(peppy,5);

27: return 0;

28: }

6. Fix the listing in Exercise 5 so that it compiles.
   7.BUG BUSTERS:What is wrong with this code?
   0: // Bug Busters
   1: #include
   2: using namespace std;
   3: class Animal;
   4:
   5: void setValue(Animal& , int);
   6: void setValue(Animal& ,int, int);
   7:
   8: class Animal
   9: {
   10: friend void setValue(Animal& ,int); // here’s the change!
   11: private:
   12: int itsWeight;
   13: int itsAge;
   14: };
   15:
   16: void setValue(Animal& theAnimal, int theWeight)
   17: {
   18: theAnimal.itsWeight = theWeight;
   19: }
   20:
   21: void setValue(Animal& theAnimal, int theWeight, int theAge)
   22: {
   23: theAnimal.itsWeight = theWeight;
   24: theAnimal.itsAge = theAge;
   25: }
   26:
   27: int main()
   28: {
   29: Animal peppy;
   30: setValue(peppy,5);
   31: setValue(peppy,7,9);
   32: return 0;
   33: }


7. Fix Exercise 7 so that it compiles.

592 Day 16