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The incrementing and decrementing operators, ++ and --, also
behave in a special way when used with pointers. They do not add 1;
instead, they increment the pointer by the number of bytes occupied by the
objects identified by the pointer. In a typical implementation,
incrementing a character pointer would increment the address by 1,
because a character occupies 1 byte. Incrementing an integer pointer,
however, would increment the address by 4, assuming an integer occupies
4 bytes in the implementation. Incrementing a trade pointer would
increment the address by 12, assuming trade objects consist
of an 8-byte floating-point number and a 4-byte integer.
Suppose, once again, that you assign the address of the first element in an integer array to a pointer variable:
nptr = &number[0];
Then, you can reassign the pointer such that it points to the addresses of other array elements:
nptr /* Pointer identifies the address of the first element */ ++nptr /* Pointer identifies the address of the second element */ ++nptr /* Pointer identifies the address of the third element */