This is a simple C program I wrote when I was studying the C programming language. This is the oldest C program I could find on my hard disk, but far from the first C program I ever wrote, which was a Hello World program I wrote in 2010, and my first proper C game which was DOS-RPG written in the same year on a Windows 98 computer.
Nonetheless, this is nothing special to a user, but it’s baby-steps like these that brought me closer to the ability to make programs such as the ones you see at the top of the page. This program tells you the size of the different native variable types in bytes.