Example of an array

Here is a statical array:

int arr[50]; /* 50 integers in the array */

/* setting some values */

arr[0] = 1;

arr[1] = 2;

...

int matrix[10][10]; /* we have a matrix 10 x 10 of integers */

/* setting some values */

matrix[0][0] = 1;

matrix[1][1] = 2;

matrix[3][5] = 3;

...

You can initialize array at the time of creation:

int arr[3] = { 0, 1, 3 };

/* or could do like this */

int arr[] = { 0, 1, 2, 3, 4, 5 };

int matrix[2][4] = { 0, 0, 0, 01, 1, 1, 1};

/* is the same as: */

int matrix[2][4] = { { 0, 0, 0, 0 }, { 1, 1, 1, 1} };

C Arrays are no limited only to one and two dimensional arrays, you can define N-dimensional arrays too.

int cube[3][3][3]; /* here we have a cube 3 x 3 x 3*/

There are dynamic arrays too, but that requires knowledge of memory management and pointers. There are some links that will explain arrays in C more detailed.