/*
 * declarations for an integer stack
 */

/* a type for integer stacks */
typedef struct {
  int *valueList; /* an array of values */
  int top; /* top of stack, -1 if empty */
  int max; /* capacity of this stack */
} intStack;

/* a boolean type */
typedef enum {FALSE, TRUE} boolean;

/* push a value on the stack */
boolean push(intStack *stack, int value);

/* pop a value off the stack */
int pop(intStack *stack);

/* examine the top value */
int peek(intStack *stack);

/* initialize a stack to hold capacity ints */
boolean initialize(intStack *stack, int capacity);

/* destroy a stack */
boolean destroy(intStack *stack);

/* number of items */
int count(intStack* stack);

/* is the stack empty? */
boolean empty(intStack *stack);

/* is the stack full? */
boolean full(intStack *stack);

/* print stack contents */
void printStack(intStack *stack);