main.cpp

C++ Source code from a tutorial

#include <iostream>
#include <stdlib.h>
#include <list>
#include <string>

using namespace std;

class Duck {
public:
    string name;
    int weight;
    int length;
};

ostream& operator << (ostream &out, const Duck &duck) {
    cout << "(" << duck.name;
    cout << "," << duck.weight;
    cout << "," << duck.length;
    cout << ")";
    return out;
}


void DumpDucks(list<Duck> *mylist) {
    list<Duck>::iterator iter = mylist->begin();
    while (iter != mylist->end()) {
        cout << *iter << endl;
        iter++;
    }
}

template <typename T>
list<T>::iterator MoveToPosition(list<T> *mylist, int pos) {
    list<T>::iterator res = mylist->begin();
    for (int loop = 1; loop <= pos; loop++) {
        res++;
    }
    return res;
}

int main(int argc, char *argv[])
{
    list<Duck> Inarow;
    
    // Push some at the beginning
    Duck d1 = {"Jim", 20, 15}; // Braces notation!
    Inarow.push_front(d1);
    Duck d2 = {"Sally", 15, 12};
    Inarow.push_front(d2);
    
    // Push some at the end
    Duck d3 = {"Squakie", 18, 25};
    Inarow.push_front(d3);
    Duck d4 = {"Trumpeter", 19, 26};
    Inarow.push_front(d4);
    Duck d5 = {"Sneeky", 12, 13};
    Inarow.push_front(d5);
    
    cout << "===========" << endl;
    DumpDucks(&Inarow);
    
    
    // Reverse
    Inarow.reverse();
    cout << "===========" << endl;
    DumpDucks(&Inarow);
    
    // Splice
    // Need another list for this
    list<Duck> extras;
    Duck d6 = {"Grumpy", 8, 8};
    extras.push_back(d6);
    Duck d7 = {"Sleepy", 8, 8};
    extras.push_back(d7);
    Duck d8 = {"Ornery", 8, 8};
    extras.push_back(d8);
    Duck d9 = {"Goofy", 8, 8};
    extras.push_back(d9);
    
    cout << "===========" << endl;
    cout << "extras:" << endl;
    DumpDucks(&extras);
    
    list<Duck>::iterator first = 
        MoveToPosition(&extras, 1);
    list<Duck>::iterator last =
        MoveToPosition(&extras, 3);
    list<Duck>::iterator into = 
        MoveToPosition(&Inarow, 2);
    
    Inarow.splice(into, extras, first, last);
    
    cout << "===========" << endl;
    cout << "extras after splice:" << endl;
    DumpDucks(&extras);
    cout << "===========" << endl;
    cout << "Inarow after splice:" << endl;
    DumpDucks(&Inarow);
    
    system("PAUSE");	
    return 0;
}