How Not to Program in C++

146 Chapter 7

40 // No assignment operator

41 stack & operator = (const stack &);

42 public:

43 // Push an item on the stack

44 void push(

45 const int item // Item to push

46 ) {

47 data[count] = item;

48 ++count;

49 }

50 // Remove the an item from the stack

51 int pop(void) {

52 --count;

53 return (data[count]);

54 }

55

56 // Function to count things in

57 // an array of stacks

58 friend void stack_counter(

59 stack stack_array[],

60 const int n_stacks

61 );

62 };

63

64 /************************************************

65 * safe_stack -- Like stack, but checks for *

66 * errors. *

67 * *

68 * Member functions: push and pop *

69 * (just like stack) *

70 ************************************************/

71 class safe_stack : public stack {

72 public:

73 const int max; //