Single (or) One dimensional arrays in C-language

Single (or) One dimensional arrays

If an array followed by only one subscript, those arrays are called one dimensional arrays.

The general format of a one dimensional array is:

           

Declaration of an one dimensional array:  

           

Syntax:           datatype ArrayName[size];

Where,

• datatype specifies the type of the elements will be stored in the array.
• ArrayName specifies the name of the array. That arrayname should follow the valid identifier rules.
• size indicates the maximum number of elements that can be stored inside the array.

Example:        int a[6];

INITIALIZATION OF ONE DIMENSIONAL ARRAYS

One dimensional array variables can be initialized into two different ways. Those are

1. Direct initialization

2. Through program execution (scanf() function)

Direct initialization:  We can initialize the elements of the array in the same way as the ordinary variables when they are declared.  The general form of initializing the one dimensional array is:

Syntax:           datatype Arrayname[size] = {List of Values};

            Here, List of Values is separated by comma operator.

                        Example:        int a[4] = {10,20,30,40};                    /* 10 20 30 40 */

                       

Through program execution:

/* EXAMPLE PROGRAM TO READ A ONE DIMENSIONAL ARRAY AND PRINT IT */

main()

{

            int n,i,a[10];

            clrscr();

            printf("\nEnter the no.of elements should be stored in array:");

            scanf("%d",&n);

            for(i=0;i<n;i++)

            {

                            scanf("%d",&a[i]);

            }

            printf("\nThe given array elements are:");

            for(i=0;i<n;i++)

            {

            printf("%5d",a[i]);

            }

            getch();

}