-
Notifications
You must be signed in to change notification settings - Fork 0
/
StackType.h
53 lines (44 loc) · 1.61 KB
/
StackType.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
#include "ItemType.h"
// The user of this file must provied a file "ItemType.h" that defines:
// ItemType : the class definition of the objects on the stack.
// MAX_ITEMS: the maximum number of items on the stack.
// Class specification for Stack ADT in file Stack1.h
class FullStack
// Exception class thrown by Push when stack is full.
{
};
class EmptyStack
// Exception class thrown by Pop and Top when stack is emtpy.
{
};
class StackType {
public:
StackType();
// Class constructor.
bool IsFull() const;
// Function: Determines whether the stack is full.
// Pre: Stack has been initialized.
// Post: Function value = (stack is full)
bool IsEmpty() const;
// Function: Determines whether the stack is empty.
// Pre: Stack has been initialized.
// Post: Function value = (stack is empty)
void Push(ItemType item);
// Function: Adds newItem to the top of the stack.
// Pre: Stack has been initialized.
// Post: If (stack is full), FullStack exception is thrown;
// otherwise, newItem is at the top of the stack.
void Pop();
// Function: Removes top item from the stack.
// Pre: Stack has been initialized.
// Post: If (stack is empty), EmptyStack exception is thrown;
// otherwise, top element has been removed from stack.
ItemType Top();
// Function: Returns a copy of top item on the stack.
// Pre: Stack has been initialized.
// Post: If (stack is empty), EmptyStack exception is thrown;
// otherwise, top element has been removed from stack.
private:
int top;
ItemType items[MAX_ITEMS];
};