Praktikum 7 Struktur Data

6. class Stack {

7. friend ostream& operator<<(ostream&,const Stack&);

8. public: 9. Stack(); 10. int penuh(int); 11. int kosong(int); 12. void cetak(); 13. void push(char); 14. char pop(); 15. private: 16. char A[maks]; 17. int banyak; 18. }; 19. ostream& operator <<(ostream& out,const Stack& s) 20. { 21. cout<<"\n Isi stack: ";

22. for(int i=0;i 58.