23 lines
643 B
C
23 lines
643 B
C
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// stack.h -- class definition for the stack ADT
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#ifndef STACK_H_
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#define STACK_H_
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typedef unsigned long Item;
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class Stack
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{
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private:
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enum {MAX = 10}; // constant specific to class
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Item items[MAX]; // holds stack items
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int top; // index for top stack item
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public:
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Stack();
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bool isempty() const;
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bool isfull() const;
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// push() returns false if stack already is full, true otherwise
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bool push(const Item & item); // add item to stack
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// pop() returns false if stack already is empty, true otherwise
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bool pop(Item & item); // pop top into item
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};
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#endif
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