pop

#include <QtCore/QCoreApplication>
#include <QMap>
#include <QMapIterator>
#include <QDebug>
#define START_POP 70
#define MW_ASYM 0.5
#define MAR_YEAR 25
#define CHILD_COUNT 4
#define MAX_YEARS 130
struct people
{
    int year;
    bool male;
    int childCount;
    int id;
    int marWith;
};
int random(int start,int end)
{
    return qrand()*(end-start)+end;
}
int main(int argc, char *argv[])
{
    QMap<int, struct people> peoples;
    QCoreApplication a(argc, argv);
    for(int i = 0; i < START_POP;i++) {
        struct people p;
        p.year = 0;
        p.id = i;
        p.childCount = 0;
        if(random(0,1) == 1)
            p.male = true;
        else
            p.male = false;
        p.marWith = -1;
        peoples[p.id] = p;
    }
    int lastID = START_POP;
    for(int y=0; y < MAX_YEARS;y++){
        QMapIterator<int, struct people> i(peoples);
        while (i.hasNext()) {
            i.next();
            struct people p = i.value();
            p.year++;
            if(p.year == MAR_YEAR) {
                //qDebug() << "search for mar";
                QMapIterator<int, struct people> k(peoples);
                while (k.hasNext()) {
                    k.next();
                    struct people part = k.value();
                    if(/*part.male != p.male &&*/ part.year >= MAR_YEAR && part.marWith == -1 ) {
                        p.marWith = part.id;
                        part.marWith = p.id;
                        peoples[part.id] = part;
                        //qDebug() << "mar 1 = " << p.id << " 2 = " << part.id;
                    }
                 }
            }
            if(random(0,2) >= 1 && p.marWith != -1 && p.childCount < CHILD_COUNT) {
                //qDebug() << "make chi " << p.id;
                p.childCount++;
                peoples[p.marWith].childCount++;
                struct people n;
                n.year = 0;
                n.id = lastID;
                n.childCount = 0;
                if(random(0,1) == 1)
                    n.male = true;
                else
                    n.male = false;
                n.marWith = -1;
                peoples[lastID] = n;
                lastID++;
            }
            if(p.childCount >= 4)
            {
                qDebug() << "removed";
                peoples.remove(p.id);
            }
            peoples[p.id] = p;
        }
        qDebug() << "year = " << y;
    }
    qDebug() << "end pop.count = " << peoples.size();

    return a.exec();
}