8.3) Defining Iterator Variables

Iterator over a vector of double values - read & write access:

vector<double>::iterator i;

Iterator over a vector of double values - read-only access:

vector<double>::const_iterator i;

Iterator over a list of strings - read-only access:

list<string>::const_iterator i;

Iterator to move backwards over a list of strings:

list<string>::reverse_iterator i;
list<string>::const_reverse_iterator i;