C / C++ / MFC

void MyTimerFunction();

class MyGlobal
{
public:
    std::atomic<bool>   m_Flag;
    std::thread         m_GlobalThread;

    MyGlobal() {
        m_Flag = true;
        m_GlobalThread = std::thread(MyTimerFunction);
    }

    ~MyGlobal()
    {
        m_Flag = false;
        if (m_GlobalThread.joinable())
            m_GlobalThread.join();
        std::cout << "MyGlobal destroyed" << std::endl;
    }
};

MyGlobal Test;


void MyTimerFunction()
{
    do
    {
        std::this_thread::sleep_for(std::chrono::seconds{10});
        if (!Test.m_Flag)
            break;

        std::cout << "New tick" << std::endl;
    } while (true);

    std::cout << "Exit MyTimerFunction" << std::endl;
}




int _tmain(int argc, _TCHAR* argv[])
{
    std::cout << "Main thread sleeping..." << std::endl;
    std::this_thread::sleep_for(std::chrono::seconds{15});
    std::cout << "Main thread awaking..." << std::endl;

    std::cout << "Main thread returning..." << std::endl;
    return 0;
}

typedef std::map<std::string, WORD> tTABMNEMO;
tTABMNEMO TabMnemo;

TabMnemo.clear();

int main(int argc, char *argv[]) {
  int a, b, c, x, y, z /* x=numbers of a y= numbers of b z= numbers of c*/
  printf("price of a:\n");
  printf("price of b:\n");
  printf("price of c:\n");
  scanf("%d, %d, %d" ,&a, &b, &c);
while (x+y+z=100){
x*a+y*b+z*c=10000