![*
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/arrayinclanguage-121007071745-phpapp01-160613190755/85/Array-in-c-language-3-320.jpg)
![*
Data type array name[index];
Example:
int list[10];
char num[15];
float hat[20];](https://image.slidesharecdn.com/arrayinclanguage-121007071745-phpapp01-160613190755/85/Array-in-c-language-4-320.jpg)
![*
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/arrayinclanguage-121007071745-phpapp01-160613190755/85/Array-in-c-language-5-320.jpg)
![*
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/arrayinclanguage-121007071745-phpapp01-160613190755/85/Array-in-c-language-6-320.jpg)
![*
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/arrayinclanguage-121007071745-phpapp01-160613190755/85/Array-in-c-language-7-320.jpg)
![*
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];](https://image.slidesharecdn.com/arrayinclanguage-121007071745-phpapp01-160613190755/85/Array-in-c-language-8-320.jpg)
![*
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/arrayinclanguage-121007071745-phpapp01-160613190755/85/Array-in-c-language-9-320.jpg)
![*
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;](https://image.slidesharecdn.com/arrayinclanguage-121007071745-phpapp01-160613190755/85/Array-in-c-language-10-320.jpg)
Array in c language
- 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;