# Hello World  ## Metadata - Author: [[codecademy.com]] - Full Title: Hello World - Category: #articles - Summary: The "Hello World" program in C++ is a simple code that displays the message "Hello World!" on the terminal. C++ has a specific structure, including using the main() function and being case-sensitive with keywords. Proper use of white space helps make the code easier to read. - URL: https://www.codecademy.com/courses/learn-c-plus-plus/articles/cpp-program-structure ## Highlights - #include <iostream> • This is known as a pre-processor directive. It instructs the compiler to locate the file that contains code for a library known as `iostream`. This library contains code that allows for input and output, such as displaying data in the terminal window or reading input from your keyboard. ([View Highlight](https://read.readwise.io/read/01j4r1z839vh7qrywy33sga582))