#include<iostream>
using namespace std;

#define DTYPE short

struct dynarray {
	DTYPE *data;
	size_t items;
	size_t space;
};

void init(struct dynarray *arr, size_t capacity){
	arr->space = capacity;
	arr->data = (DTYPE*)malloc(sizeof(DTYPE) * capacity);
	arr->items = 0;
}

void append(struct dynarray *arr, DTYPE new_item){
	if(arr->items == arr->space){
		arr->data = (DTYPE*)realloc(arr->data, sizeof(DTYPE) * (arr->space + 10));
		arr->space += 10;
	}
	arr->data[arr->items] = new_item;
	arr->items++;
}

void free_dynarray(struct dynarray *arr){
	free(arr->data);
}

int main(){
	struct dynarray test_array;
	init(&test_array, 10);
	for(int i = 0; i < 100; i++)
		append(&test_array, i * 1.5);

	for(int i = 0; i < 100; i++)
		cout << test_array.data[i] << " ";
	cout << endl;

	free_dynarray(&test_array);

	struct dynarray other_array;
	init(&other_array, 10);
	for(int i = 0; i < 100; i++)
		append(&other_array, i * 1.5);

	for(int i = 0; i < 100; i++)
		cout << other_array.data[i] << " ";
	cout << endl;

	free_dynarray(&other_array);
	

	return 0;
}