q6.cpp

#include <iostream>
#include <deque>
#include <algorithm>
#include <iterator>
#include <cstring>
#include <vector>

using namespace std;

// non-breaking-s-pace
#define NBSP " "
// new line because I am sick of typing
#define NL std::cout << std::endl

void __(const char* s) {
        if(getenv("DEBUG"))
                std::cout << s << std::endl;
}

int add_10(int a) {
        return a + 10;
}

template<class T>
void VAR_DUMP(const T &x) {
        NL;
        copy(x.begin(), x.end(), ostream_iterator<int>(cout, NBSP));
        NL;
}

int main()
{

        __("getenv('USER') == 'ryan'");


        if(strcmp(getenv("USER"), "Ryan") == 0)
                __("YES");
        else
                __("NO");


        __("Question 1");

        // initializer list
        const int a[] { 99, 0, -11, 12, 23, 45 };

        deque<int> d1, d2;

        copy(begin(a), end(a), front_inserter(d1));

        VAR_DUMP(d1);

        transform(d1.begin(), d1.end(), back_inserter(d2), add_10);

        VAR_DUMP(d2);

        __("Question 2");
        __("Use the generate function to insert all odd numbers into a vector");

        vector<int> v(10);

        int i = 0;
        generate(v.begin(), v.end(), [&i]() {
                        if(++i % 2 != 0) {
                                return i;
                        } else {
                                return 0;
                        }
        });

        __("Contents of vector");
        VAR_DUMP(v);