for(int i = 0;i < e.size();++i)//столкновение с врагом (вылетает ошибка vector interator not dereferencable)  
{  
        loop1:  
        if(it->isCollision(e[i]))

for(auto it = b.begin(); it!= b.end();)//обработка механики пули

/////////////////////////////////////////////////////////// bullets  
for(auto Bullet = b.begin(); Bullet != b.end();)//обработка механики пули  
{  
   bool Collision = false;

   for(auto Enemy = e.begin(); Enemy != e.end();)  
   {
        if(Bullet->isCollision(*Enemy))  
        {  
         Enemy->Spawn(res);   
         Enemy->Destroy();
         e.erase(Enemy);  

         Bullet->Destroy();  
         Bullet = b.erase(Bullet);  

         Player::Score++;  

         Collision = true;
         break;
        }  
   }

   if (Collision == false) Bullet++;
  }

#include <windows.h>

void main() {
     HWND console_handle = GetConsoleWindow();
     HDC device_context = GetDC(console_handle);

     HPEN pen =CreatePen(PS_SOLID,5,RGB(255,0,0));
     SelectObject(device_context,pen);
     Ellipse(device_context, 10, 10, 100, 100);
     ReleaseDC(console_handle, device_context);
}

#include <iostream>
using namespace std;

const int d = 1500;
int buffer = d;

int main()
{
  for(int i = 1; i <= 400; i++)
  {
   cout<<"Level "<<i<<": "<<buffer<<endl;
   buffer = buffer + d;
  }
  system("PAUSE");
}

#include <fstream>

using namespace std;

int main()
{
  const int d = 1500;
  int buffer = d;
  ofstream file("test.txt");
  for(int i = 1; i <= 400; i++)
  {
   file<<"Level "<<i<<": "<<buffer<<endl;
   buffer = buffer + d;
  }
}

    srand(time(NULL));
  int random =rand() % 10000;
      cout << random << "\n";

srand(time(NULL));   
    int random =(int)(rand() % 10000);   
        cout << random << "\n";

srand(time(NULL));

srand( (unsigned int) time(NULL) );

for(int i = 0; i<array.length/2; i++) {
      int tmp = array[i];
      array[i] = array[array.length-i-1];
      array[array.length-i-1] = tmp;
}

srand( (unsigned int) time(NULL) );
    random1 =rand() % 255;
    random2 =rand() % 255;
    random3 =rand() % 255;
       glColor3f(random1/255,random2/255,random3/255);              
       glBegin(GL_QUADS);
       glVertex2i(x*32-16,y*32+16);
       glVertex2i(x*32+16,y*32+16);
       glVertex2i(x*32+16,y*32-16);
       glVertex2i(x*32-16,y*32-16);
       glEnd();