#include "mydefs1c.h"

void main()
{
	Istack s1(500);
	Istack s2; 		// default constructor?
	Istack s3(); 	// a function which returns Istack
	Istack s6(137); 
	Istack s4[5]; 	// default constructor called 5 times here
	Istack* s5;		// no space, just a pointer
//	Istack s8[2](137); 	// array of two stacks size 137, NO
//	Istack s7()[2];		// s7() is a function returning an array!
//	Istack s9(23)[2];	// two 23-element stacks?  No way, can only use default
	Istack s9(23);
	int i;

	s5 = new Istack;		// get stack space, which constructor?
	for( i = 0; i < 20; i++ ) {
		s1.push(i);			// s1 is a 500 element stack
	}

	for( i = 0; i < 20; i++ ) {
		cout << s1.pop() << ' ';
	}
	cout << endl;
	
//	s3.push(10);			// s3 is a function, not a stack
//	cout <<  s3.pop() << ' ';
	s4[3].push(11);		// 3rd stack in the array
	cout << s4[3].pop() << ' ';
	s5->push(12);			// pointing to a stack
	cout << s5->pop() << endl;
	delete s5;				// explicit removal
}
/*
using pre-set creator 500
using default creator 97
using pre-set creator 137
using default creator 97
using default creator 97
using default creator 97
using default creator 97
using default creator 97
using pre-set creator 23
using default creator 97
19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 
11 12
*/