Вычисление стоимости покупки с учетом скидки

//---------------------------------------------------------------------------
 
#include <iostream.h>
 
//---------------------------------------------------------------------------
 
int main(int argc, char* argv[])
{
   float summ = 0;
 
   cout << "Vvedite summu: ";
   cin >> summ;
   if (summ <= 1000)
   {
      cout << "Skidka 0%" << endl;
      cout << "Summa so skidoi = " << summ << endl;
   }
   else if (summ > 1500)
   {
      cout << "Skidka 7%" << endl;
      cout << "Summa so skidoi = " << (summ * 0.93) << endl;
   }
   else
   {
      cout << "Skidka 5%" << endl;
      cout << "Summa so skidoi = " << (summ * 0.95) << endl;
   }
   system("pause");
   return 0;
}
//---------------------------------------------------------------------------

//---------------------------------------------------------------------------
 
#include <iostream.h>
 
//---------------------------------------------------------------------------
 
int main(int argc, char* argv[])
{
   float minut = 0;
   float price = 0;
   float summ = 0;
   int day = 0;
 
   cout << "Vvedite kolichestvo minut: ";
   cin >> minut;
   cout << "Vvedite tarif: ";
   cin >> price;
   cout << "Vvedite den' nedeli: ";
   cin >> day;
   while ((day <= 0) || (day > 7))
   {
      cout << "Nepravil'nyi den' nedeli." << endl;
      cout << "Vvedite den' nedeli: ";
      cin >> day;
   }
   summ = minut * price;
   if (day == 6 || day == 7)
      summ *= 0.8;
 
   cout << "Schet: " << summ << endl;
   system("pause");
   return 0;
}
//---------------------------------------------------------------------------