Incrementing an iterator moves the iterator one element at a time. All the library containers have iterators that support increment. Similarly, we can use
!= to compare two valid iterators (§ 3.4, p. 106) into any of the library container types.
vector support additional operations that can move an iterator multiple elements at a time. They also support all the relational operators. These operations, which are often referred to as iterator arithmetic, are described in Table 3.7.
We can ...