Exercises got from https://www.w3schools.com/c/c_variables_format.php
$ cd ..
Clone the https://github.com/ThrowTheSwitch/Unity project and rename the root folder to unity
Go to the root folder of this project again
Copy the folder hello_world
to create a new project
# this is an example to test the hello world
gcc 001_hello_world/test_hello_world.c 001_hello_world/hello_world.c ../unity/src/unity.c -o TestRunner; ./TestRunner