Useful application (yes, I'm proud)

#include <iostream>
#include <fstream>
#include <cstdlib>
#include <windows.h>

using namespace std;
int main()
{
    cout << "How fast should the sex be? \n The lover the number, the faster it will be.\n";
    int a;
    cin >> a;
   while(true)
   {

    cout << "8=====D   ()" << endl;
    Sleep(a);
    system("cls");
    cout << " 8=====D  ()" << endl;
    Sleep(a);
    system("cls");
    cout << "  8=====D ()" << endl;
    Sleep(a);
    system("cls");
    cout << "   8=====D()" << endl;
    Sleep(a);
    system("cls");
    cout << "    8====(=)" << endl;
    Sleep(a);
    system("cls");
    cout << "     8===(=)" << endl;
    Sleep(a);
    system("cls");
    cout << "      8==(=)" << endl;
    Sleep(a);
    system("cls");
    cout << "       8=(=)" << endl;
    Sleep(a);
    system("cls");
    cout << "      8==(=)" << endl;
    Sleep(a);
    system("cls");
    cout << "     8===(=)" << endl;
    Sleep(a);
    system("cls");
    cout << "    8====(=)" << endl;
    Sleep(a);
    system("cls");
    cout << "   8=====D()" << endl;
    Sleep(a);
    system("cls");
    cout << "  8=====D ()" << endl;
    Sleep(a);
    system("cls");
    cout << " 8=====D  ()" << endl;
    Sleep(a);
    system("cls");
    cout << "8=====D   ()" << endl;
    Sleep(a);
    system("cls");
   }
    return 0;
}