Project: Hello World

In this project we'll write our first program, the classic 'hello world' program. The 'hello world' actually comes from the original creators of the C programming language. It's a basic program that will teach us how to structure our program & compile it. It will also introduce the C runtime libraries & a very useful function printf.

By the end of this project you'll be able to:

  1. Write the entry point all programs require
  2. Use common commands in the command prompt
  3. Compile a program from the command line
  4. Run a program from the command line
  5. Learn about variables & what a string is
  6. Learn what the '#include' statement does
  7. Understand what printf does
  8. Print 'Hello World' to the command line

Lesson 0: Writing the entry point to our program

In this lesson we introduce the entry point to our program. We also learn about functions & what a function requires.

Lesson 1: Using the command line & creating our first c++ file

We use some common commands on the command line to navigate to different folders & make new folders. We learn create a new .cpp file ready to write our code.

Lesson 2: Compiling our program

We use the compiler to turn our code into a program, and then run it.

Lesson 2: Variables & Strings

We show what a variable is & introduce strings, and how in C code you intialize strings.

Lesson 3: #include statment & header (.h) files

We introduce the #include statment used to import header files (files ending in .h)

Lesson 4: the Printf function

We use the printf funciton to output our string to the console.