Pointer Arithmetic

A pointer, as discussed before, is a reference to a memory address. This can be exploited to perform arithmetic operations with them, to access values

Accessing arrays

Arrays are in reality similar to pointers. Although they are not the same:Array variables are a reference to the memory position of the first element of the array in the memory, while pointers are variables that hold a value (that is a memory address). More info

This similarity translates into pointer arithmetic and array indexing being equivalent:

int array[] = {1, 2, 3, 4, 5};
int *pointer;

pointer = array; //Because array is already a memory reference
for (int i = 0; i < 5; i++)
{
    printf("Element %d is %d\n", i, *(pointer + i));
}

prints

Element 0 is 1
Element 1 is 2
Element 2 is 3
Element 3 is 4
Element 4 is 5

As well as modifying the for loop like:

for (int i = 0; i < 5; i++)
{
    printf("Element %d is %d\n", i, *pointer);
    pointer++;
}

Note that an array of pointers, is also possible

char *a[3] = {"One", "Two", "Three"};