test

QString::QString(char* c)
{
    count = strlen(c);
    core = _strdup(c);
}
QString::QString(const QString& qs)
{
    count = qs.count;
    core = _strdup(qs.core);
}

QString::~QString()
{
    if (core){
        delete core;
        core = NULL;
        //count = 0;
    }
}

QString &QString::operator=(QString& qs)
{
    if (this != &qs){
        delete core;
        count = qs.count;
        core = _strdup(qs.core);
    }
    return *this;
}