C pointer to array element

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1. Array and Pointer are backbones of the C Programming language
2. Pointer and array , both are closely related 
3. We know that array name without subscript points to first element in an array

Example :  One dimensional array

int a[10]; 

Example : Two dimensional Array

int a[10][10];

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1. x is an array , 
2. i is subscript variable

                       =   i [ x ]

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     1 . For first element of array i = 0
                       x[0]  = * ( x + 0) 

                               = *x

Thus we have concluded that , first element of array is equivalent to *x .

     2 . Thus *(x+i) will gives us value of ith element.

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Summary :  Consider following code

main()
{
int x[] = {1,2,3,4,5};
int *ptr,i ;
ptr = x
for(i=0;i<5;i++)
    {
    printf("nAddress : %u",&x[i]);
    printf("nElement : %d",x[i]);
    printf("nElement : %u",*(x+i));
    printf("nElement : %d",i[x]);
    printf("nElement : %d",*ptr);
    }  
} 

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Output :

    Address : 7600
    Element : 1
    Element : 1
    Element : 1
    Element : 1
    Address : 7602
    Element : 2
    Element : 2
    Element : 2
    Element : 2
    Address : 7604
    Element : 3
    Element : 3
    Element : 3
    Element : 3
    Address : 7606
    Element : 4
    Element : 4
    Element : 4
    Element : 4
    Address : 7608
    Element : 5
    Element : 5
    Element : 5
    Element : 5

Following 4 are considered as Equivalent
x[i]	*(x + i)
i[x]	*ptr

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                          = *( * ( x + i ) + j )

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