#ifndef __STACK__H__
#define __STACK__H__

#include "calc.h"
/* 
   pushes the value on to the stack. If stack is full then returns 0
   otherwise 1 
*/

int push(number); 
number pop(); /* careful does not check for empty stack */

void printStack(); /* print the contents of the stack */
void emptyStack(); /* make the stack empty  */

int isStackEmpty(); /* check whether the stack empty */

#endif