what is one dimensional array

Array is collection of similar type of data type.In the previous post we learn about what is array.
In this post we learn what is one dimensional array

topics we will learn are:

1. What is one dimensional array.
2. How to declare one dimensional array.
3. How to initialize one dimensional array.

Before discuss about one dimensional array we should know what is array and how to declare array.If you don't know you can Read what is array.

What is one dimensional array:

1. One dimensional array have single row and multiple columns.
2. For accessing any element in one dimensional array we have to write Array name followed by element number or index number or subscript number.
3. If we don't specify index number then the first element value will be accessed.

How to declare One dimensional Array:

To declare one dimensional array we have to write data type followed by array name followed by size of array in square bracket([ ]).you can see the below example:

Syntax:     data type array name[size of Array];

Example:  int number[5];

How to initialize One dimensional Array:

We can assign the values to array elements at the time of declaration of array.all values are separated by comma(,).you can see the below example:

Syntax:     data type array name[size of Array]={set of values};

Example:  int number[5]={2,4,6,8,10};

Example:program to input five numbers and print it in reverse order:

#include<stdio.h>

void main()
{
    int a[5],b;
    printf("type 5 numbers");
    for(b=0;b<=4;b++)
    {
        scanf("%d",&a[b]);
    }
    printf("\n in reverse order");
    for(b=4;b>=0;b--)
    {
    printf("\n%d ",a[b]);
    }

}

Output:

type 5 numbers:
2
4
6
8
10

in reverse order:
10
8
6
4
2

Explanation:

1. When the above program executed first the array 'a'  is declared in memory with size of 5 elements.
2. To input values loop is placed.

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