Embedded Programming with Modern C++ Cookbook

How to do it...

We will create a program that allocates an array of structures and check how the order of the fields affects memory consumption. Follow these steps to do so:

1. In your working directory, that is, ~/test, create a subdirectory called alignment.
2. Use your favorite text editor to create a file called alignment.cpp in the loop subdirectory. Add the required header and define two data types, that is, Category and ObjectMetadata1:

#include <iostream>enum class Category: uint8_t {  file, directory, socket};struct ObjectMetadata1 {  uint8_t access_flags;  uint32_t size;  uint32_t owner_id;  Category category;};

3. Now, let's define another data type, called ObjectMetadata2, along with the code that uses all of them:

struct ObjectMetadata2 ...