#include "gen_stack.h"
#include <stdio.h>
#define MAXSIZE 10

gstack::gstack(int capacity)
{
    values = new void*[capacity]; 
    this->capacity = capacity;
    top = -1;
}

gstack::gstack(const gstack &old_gstack)
{
    int i;
    values = old_gstack.values;
    capacity = old_gstack.capacity;
    top = old_gstack.top;
    for (i = 0; i < capacity; i++)
	values[i] = old_gstack.values[i];

}


gstack::~gstack()
{
    delete values;
}


void *gstack::vpush(void *value)
{
    return values[++top] = value;
}

void *gstack::vpop()
{
    return values[top--];
}

bool gstack::empty()
{
    return top < 0;
}

bool gstack::full()
{
    return top >= capacity - 1;
}

/*
int main()
{
    int i, j[MAXSIZE], k[MAXSIZE];
    gstack s1(MAXSIZE), s2(MAXSIZE);

    for (i = 0; i < MAXSIZE; i++) {
	j[i] = i;
	k[i] = i*i;
    }

    for (i = 0; !s1.full() && !s2.full(); i++) {
	s1.vpush((void *)&j[i]);
    }

    for (i = 0; !s1.empty(); i++) {
	printf("%d\n", *((int *)s1.vpop()));
    }

    return 0;
}
*/