Array
An array is a collection of similar data types. Arrays are used to store group of data of same data type. Array use to store continuous memory locations.
Example : int a[10];
Types of arrays
- One Dimensional Array
- Two Dimensional Array
- Multi Dimensional Array
1. One Dimensional Array
An array where data is arranged in a single dimension is called one dimensional array.
Declaration of 1-D Array
Syntax : datatype array_name[size];
Example : int marks[3];
Initialization of 1-D Array
Syntax : datatype array_name[size] = { List of value };
Example : int marks[3]={0,1,2};
2. Two Dimensional Array
An array where data is arranged in a two dimension is called two dimensional array. Such as combination of rows and columns.
Declaration of 2-D Array
Syntax : datatype array_name [row-size] [column-size];
Example : int table[2][2];
Initialization of 2-D Array
Syntax : datatype array_name [row-size] [column-size]= { Rows & Column value };
Example : int table[2][2]={0,1,2,3};
3. Multi Dimensional Array
An array where data are arranged in multiple dimensions is called multi-dimensional array. In the sample words as array of arrays known as multi-dimensional array.
Declaration of Multi-D Array
Syntax : datatype array_name [S1] [S2]………..[Sn];
Example : int table[2][3][4];
Passing arrays to functions
Passing array elements to a function is similar to passing variables to a function. In C language we can pass the entire Arrays to Function as an argument.
Example 1 : int sum (int arr[]);
// using call by value
Example 2 : int sum (int* ptr);
// using call by reference
