ex9_33.cpp

//
//  ex9_33.cpp
//  Exercise 9.33 
//
//  Created by pezy on 12/3/14.
//
//  @Brief  In the final example in this section what would happen 
//          if we did not assign the result of insert to begin? 
//          Write a program that omits this assignment to see if your expectation was correct.  
//  @Answer Crash, because the iterator is invalid after inserting.

#include <iostream>
#include <vector>

using std::vector; using std::cout; using std::endl;

int main()
{
    vector<int> v{ 1, 2, 3, 4, 5, 6, 7, 8, 9 };
    auto begin = v.begin();
    while (begin != v.end()) {
        ++begin;
        /*begin = */v.insert(begin, 42);
        ++begin;
    }

    for (auto i : v)
        cout << i << " ";

    return 0;
}