Arrays

Arrays:

• Array is a collection of similar data items that are stored under a single name.
• value in an array is identified by index enclosed in square brackets with array name.

Declaration:

         syntax:      datatype    array-name[size];

                                  int   a[3];

                       this can represents array of integer.

• In array the elements are stored in continuous memory location.
• The starting memory location is represented by the array name called base address of the array.

Initialization of array :

• After the declaration of an array its elements must be initialized otherwise they contain garbage values.      

syntax:
            data-type  array-name[size]={list of values};
                    int   a[5]={25,26,27,28,29};

• int a[]={25,26,27,28,29};

         the size of the array a is 5 as there are 5 values on RHS.

• int a[5]={1,2,3};

         here remaining two values of array are garbage.

Accessing of Array:

• After initialization array elements can be access by subscripts.

           example: int a[]={25,26,27,28,29};

                          

            This can be shown as follows:

• Here 0,1,2,3,4 are subscripts and has address of values.
• In array the elemenys are stored in continuous memory location.
• Address of the first location in array is called base address.
• Elements can be accessed by  c[0] is 25,c[1] is 26,c[2] is 27,c[3]  is 28, c[4] is 29. 

program on accessing the numbers from array:

You can also refer

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•   First C program
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