Types of Arrays

There are majorly three types of arrays

There are majorly three types of arrays:

1. One-dimensional array (1-D arrays)
2. Two-dimensional (2D) array
3. Three-dimensional array

1. One-dimensional array (1-D arrays):

You can imagine a 1d array as a row, where elements are stored one after another.
 

1D array

Syntax for Declaration of Single Dimensional Array

Below is the syntax to declare the single-dimensional array

data_type array_name[array_size];

where,

• data_type: is a type of data of each array block.
• array_name: is the name of the array using which we can refer to it.
• array_size: is the number of blocks of memory array going to have.

For Example

int nums[5];

2. Two-dimensional (2D) array:

Multidimensional arrays can be considered as an array of arrays or as a matrix consisting of rows and columns.
 

2D array

Syntax for Declaration of Two-Dimensional Array

Below is the syntax to declare the Two-dimensional array

data_type array_name[sizeof_1st_dimension][sizeof_2nd_dimension];

where,

• data_type: is a type of data of each array block.
• array_name: is the name of the array using which we can refer to it.
• sizeof_dimension: is the number of blocks of memory array going to have in the corresponding dimension.

For Example

int nums[5][10];

3. Three-dimensional array:

A 3-D Multidimensional array contains three dimensions, so it can be considered an array of two-dimensional arrays.
 

3D array

Syntax for Declaration of Three-Dimensional Array

Below is the syntax to declare the Three-dimensional array

data_type array_name[sizeof_1st_dimension][sizeof_2nd_dimension][sizeof_3rd_dimension];

where,

• data_type: is a type of data of each array block.
• array_name: is the name of the array using which we can refer to it.
• sizeof_dimension: is the number of blocks of memory array going to have in the corresponding dimension.

For Example

int nums[5][10][2];