Introduction to Arrays in C Programming

Arrays

Let’s imagine a process, to print a large number o integers using C program.

In order to process a large data, a powerful data structure like an array is required.

Definition:

An array is a collection of elements of the same data type.

An array is a sequenced collection. The elements in an array are referred to as the first element, second element and so on until we get to the last element.

Arrays are used to store a large number of variables of the same type, under a single variable.

For example: Arrays are used to store marks of 50 students or to record the sales of 100 salesmen.

Arrays-Example

Example 1:
To process ten variables.

In order to record ten scores, the values for ten variables should be declared and initialized.

Example 2:

Processing of ten variables:

The ten variables are first read and then printed in the output.

Example 3: 
To process ten variables in array

The array of ten variables in displayed in the subscript format and index format:

Each variable is assigned a value in the form a subscript or in the form of an index.

As the values of ten variables are to be printed, the index and subscript value varies from 0 to 9.