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Definiti>child = malloc(sizeof(struct Nested)); / allocate nested struct /

s->child->count = strlen(name); / use string length /
s->child->count++; / increment it /

strcpy(s->name, name); / copy the name into buffer /

s->id = id; / set the integer value /

return s;


/ Free a MyStruct instance and its nested struct /
void destroy_mystruct(MyStruct s)
free(s->child);
free(s);




Note: The code uses `malloc()` for the nested struct rather than allocating it orderFactory->createNew();
$this->stateMachineTransitioner->transiti>productVariantRepository->find(1);
$orderItem = $this->orderItemFactory->createNew();
$this->stateMachineTransitioner->transition($orderItem, 'sylius_order_item', 'cart');


`productVariantRepository` retrieves the product‑variant entity.

A new order item is created and also moved into Cart stage.



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3. Adding variant to the order



$orderItem->setProductVariant($variant);
$orderItem->setQuantity(1);

$this->entityManager->persist($orderItem);
$this->entityManager->flush();


The variant is set on the item, quantity given, and the item persisted.



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4. Adding the order item to an order



$order->addItem($orderItem);


`Order::addItem()` appends the item to the collection of items belonging to that order.



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This code shows how to create an order item with a product variant, persist it, and attach it to an order in Symfony.