ex10_07.cpp

//
//  ex10_07.cpp
//  Exercise 10.7
//
//  Created by pezy on 12/9/14.
//  Copyright (c) 2014 pezy. All rights reserved.
//
//  @Brief  Determine if there are any errors in the following programs and, if
//  so, correct the error(s)

#include <iostream>
#include <vector>
#include <list>
#include <algorithm>

using std::vector;
using std::cout;
using std::endl;
using std::list;
using std::cin;
using std::fill_n;

template <typename Sequence> void print(Sequence const& seq)
{
    for (const auto& i : seq) cout << i << " ";
    cout << endl;
}

int main()
{
    // (a)
    vector<int> vec;
    list<int> lst;
    int i;
    while (cin >> i) lst.push_back(i);
    vec.resize(lst.size());
    // ^ Fixed: added this statement
    // Cause Algorithms that write to a destination iterator assume
    // the destination is large enough to hold the number of elements being
    // written.
    copy(lst.cbegin(), lst.cend(), vec.begin());

    // another way to fix bug
    // copy(lst.cbegin(), lst.cend(), back_inserter(vec));

    // (b)
    vector<int> v;
    v.reserve(10);
    fill_n(v.begin(), 10, 0);
    // ^ (b)No error, but not any sense. v.size() still equal zero.
    // Fixed: 1. use `v.resize(10);`
    //    or  2. use `fill_n(std::back_inserter(v), 10, 0)`

    print(v);
    print(vec);
}