Comparison of pointers and arrays in C language

Most of the time in c pointers and arrays are considered the same. Some differences are:

&operator:

• &pointer = Returns the address of the pointer.

• &array = Returns the address of the first element.

sizeof operator:

• sizeof( array) = Returns the total memory consumed by all elements of the array.

• sizeof(pointer) = Returns the only memory consumed by the pointer variable itself.

Array variables cannot be reassigned, but pointer variables can.

Statement:

int a[]; //array
Int *p; //pointer

Let us consider that there is an integer pointer variable

int *i;

Now let us consider the result of the following job -

a = &i; //illegal assignment. a variable can not be updated or modified.
p = &i; //legal assignment.

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