#include <iostream>
using namespace std;
enum month{January = 1, February = 2,March = 3,April = 4, May = 5, June = 6, July = 7, August = 8, September = 9,October = 10,November = 11,December = 12};
int main()
{

cout<<July;
system("pause");
}

#include <iostream>   
#include <math.h>
using namespace std;   
struct point
{
         int x;
         int y;
};
struct segment
{
         point point1;
         point point2;
         };
           
double GetLength(segment obj)
{
      double length = sqrt(((obj.point1.x-obj.point2.x)*(obj.point1.x-obj.point2.x))+((obj.point1.y-obj.point2.y)*(obj.point1.y-obj.point2.y)));
      return length;
}

int main()
{
      segment MySegment;
      MySegment.point1.x = 10;
      MySegment.point1.y = 10;
      MySegment.point2.x = 20;
      MySegment.point2.y = 20;
      cout<<GetLength(MySegment);
      system("Pause");
        
}

#include <iostream>
using namespace std;
#define LIMIT 499
int main()
{
       int iValue;
       int iValue2;
       int iDuration;
       int iTotal;
       cout<<"Введите величину абонентской платы:  ";
       cin>>iValue;
       cout<<endl<<"Введите стоимость платы за минуту сверх лимита: ";
       cin>>iValue2;
       cout<<endl<<"Продолжительность разговоров: ";
       cin>>iDuration;
          
          
       if(iDuration>LIMIT) iTotal = (LIMIT*iValue+(iDuration-LIMIT)*iValue2);
       else iTotal = iDuration*iValue;
       cout<<iTotal;
         
       system("pause");
          
          
}