Arrays in C allow storing multiple values of the same data type sequentially in memory. An array is declared with a data type followed by the array name and size in square brackets. Individual elements are accessed using the array name and index in square brackets. Arrays can also be multidimensional to store arrays of arrays. Multidimensional arrays are declared with the data type, array name, and size of each dimension in square brackets.

1. *Array in C Language

2. *Introducing Arrays.
Declaration of a Array. Variables, Creating
Arrays.
The Length of Arrays.
Initializing Arrays.
Multidimensional Arrays.

3. *
Array is a data structure that represents a
collection of the same types of data.
int num[10];
Num reference
An Array of 10 Elements
of type int.
num [0]
num[1]
num[2]
num [3]
num[4]
num[5]
num[6]
num[7]
num[8]
num[9]

4. *
Data type array name[index];
Example:
int list[10];
char num[15];
float hat[20];

5. *
Data type array-name[size];
Example:
int num[10];
num[0]references the first element
in the array.
num[9]references the last element in
the array.

6. *
Once an array is created, its size is
fixed. It cannot be changed.
For Example,
int arr[10];
You can not insert any number to
arr[11] location because it is not
initialized.

7. *
Declaring, creating, initializing in one
step:
int my Array[5] = {1, 2, 3, 4, 5};
int studentAge[4];
studentAge[0] = 14;
studentAge[1] = 13;
studentAge[2] = 15;
studentAge[3] = 16;

8. *
int matrix[10] [10];
for (i=0; i<10; i++)
for (j=0; j<10; j++)
{
matrix[i] [j] = i * j;
}
float mat[5] [5];

9. *
0 1 2 3 4
0
1
2
3
4
0 1 2 3 4
0
1
2 7
3
4
int matrix[5]
[5];
matrix[2] [1] =
7
0 1 2
0 1 2 3
1 4 5 6
2 7 8 9
3 10 11 12
int[][] array
={
{1, 2, 3},
{4, 5, 6},
{7, 8, 9},
{10, 11, 12}};

10. *
To declare, create and initialize a
multidimensional array.
For example,
int[][] array = {
{1, 2, 3},
{4, 5, 6},
{7, 8, 9},
{10, 11, 12}
};
This is equivalent to the following statements:
array[0][0] = 1; array[0][1] = 2; array[0][2] = 3;
array[1][0] = 4; array[1][1] = 5; array[1][2] = 6;
array[2][0] = 7; array[2][1] = 8; array[2][2] = 9;
array[3][0] = 10; array[3][1] = 11; array[3][2] = 12;