stack.h

class stack

{

private: // data members and utility functions

public: // for the client to use

// Constructor

stack();

// Destructor

~stack();

// HOW TO CALL: No argument. Returns Boolean.

// PURPOSE: returns true if stack is empty else false

bool isEmpty ();

// HOW TO CALL: No argument. Returns Boolean.

// PURPOSE: returns true if stack is full else false

bool isFull ();

// HOW TO CALL: Provide the element to be pushed as an argument.

// PURPOSE: if full, calls an emergency exit routine

// if not full, enters an element at the top

void push (el_t);

// HOW TO CALL: Gives back the removed element via pass by reference.

// PURPOSE: if empty calls an emergency exit routine

// if not empty, removes an element from the top

void pop (el_t&);

void pop (el_t&);

void pop (el_t&);

};

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stack.cpp

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stacktest.cpp