Array in-c
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This document discusses arrays in C language. It defines an array as a data structure that stores a collection of the same type of data. It explains how to declare, create and initialize one-dimensional arrays with examples. It also discusses the length of arrays and how it is fixed after creation. Finally, it introduces two-dimensional arrays as a list of one-dimensional arrays, and provides examples of declaring and initializing two-dimensional arrays in C.
![Introducing Arrays
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]](https://image.slidesharecdn.com/array-in-c-160817212940/85/Array-in-c-3-320.jpg)
![Declaring Array Variables
Data type array name[index];
Example:
int list[10];
char num[15];
float hat[20];](https://image.slidesharecdn.com/array-in-c-160817212940/85/Array-in-c-4-320.jpg)
![Creating Arrays
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.](https://image.slidesharecdn.com/array-in-c-160817212940/85/Array-in-c-5-320.jpg)
![The Length of Arrays
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.](https://image.slidesharecdn.com/array-in-c-160817212940/85/Array-in-c-6-320.jpg)
![Initializing Arrays
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;](https://image.slidesharecdn.com/array-in-c-160817212940/85/Array-in-c-7-320.jpg)
![Two dimension Array
• The simplest form of multidimensional
array is the two-dimensional array. A two-
dimensional array is, in essence, a list of
one-dimensional arrays. To declare a two-
dimensional integer array of size [x][y], you
would write something as follows
• type arrayName [ x ][ y ];](https://image.slidesharecdn.com/array-in-c-160817212940/85/Array-in-c-9-320.jpg)
![Multidimensional Array Illustration
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}};](https://image.slidesharecdn.com/array-in-c-160817212940/85/Array-in-c-10-320.jpg)
Array in-c
- 1. Array in C Language
- 2. Index Introducing Arrays. Declaration of a Array. Variables, Creating Arrays. The Length of Arrays. Initializing Arrays. Multidimensional Arrays.
- 3. Introducing Arrays 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. Declaring Array Variables Data type array name[index]; Example: int list[10]; char num[15]; float hat[20];
- 5. Creating Arrays 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. The Length of Arrays 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. Initializing Arrays 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. Example of One Dimension Array
- 9. Two dimension Array • The simplest form of multidimensional array is the two-dimensional array. A two- dimensional array is, in essence, a list of one-dimensional arrays. To declare a two- dimensional integer array of size [x][y], you would write something as follows • type arrayName [ x ][ y ];
- 10. Multidimensional Array Illustration 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}};
- 12. Example of Two dimension Array