Arrays are data structures that hold a group of elements and each element has a position denoted by an integer called the index of that element.  

Important properties of arrays

Important properties of arrays are:

1. Array indexes (element positions) have to be integers and start at 0. 

Multidimensional arrays are arrays of arrays. For instance, a 2D array is an array of 1D arrays and a 3 D array is an array of 2 D arrays, where each of those 2D arrays is again an array of 1D arrays.

Multidimensional array declaration and initializations

Declaration without initialization

int mArray[][];  or

int mArray1[][][]; or

int [] mArray2[][];

Youtube

1. GitHub and Git Fundamentals Playlist

2. What is GitHub?

3. Installing Git on Windows

4. Installing Git on Mac

Creating Git Repo Locally

Go to an empty directory and run:

git init

Adding files to Git Repo

Create a file README.txt with some test contents

If you do 'git status' the README.txt file will be shown as un-tracked file.

Run:

git add README.txt

Notes:

To add all files in a directory:

git add .

To add only modified files:

git add -u

System Level Configuration

git config --system

Stored in etc/gitconfig in Mac / Linux. Similar structure in Windows, usually within usually within Program Files.

User Level Configuration

git config --global

Stored in ~/.gitconfig in Mac / Linux. Similar structure in Windows, within user home folder.

Repository Level Configuration

git config

Stored in .git/config in each repo.